{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3466", "assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f", "state": "PUBLISHED", "assignerShortName": "Checkmk", "dateReserved": "2026-03-03T09:09:01.487Z", "datePublished": "2026-04-07T12:08:50.132Z", "dateUpdated": "2026-04-08T08:17:54.013Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Checkmk", "vendor": "Checkmk GmbH", "versions": [{"status": "affected", "version": "2.2.0", "versionType": "semver"}, {"lessThan": "2.3.0p46", "status": "affected", "version": "2.3.0", "versionType": "semver"}, {"lessThan": "2.4.0p25", "status": "affected", "version": "2.4.0", "versionType": "semver"}, {"lessThan": "2.5.0b3", "status": "affected", "version": "2.5.0b1", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Alex Williams (Pellera Technologies)"}], "descriptions": [{"lang": "en", "value": "Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard."}], "impacts": [{"capecId": "CAPEC-592", "descriptions": [{"lang": "en", "value": "CAPEC-592: Stored XSS"}]}], "metrics": [{"cvssV4_0": {"baseScore": 8.5, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N", "version": "4.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f", "shortName": "Checkmk", "dateUpdated": "2026-04-08T08:17:54.013Z"}, "references": [{"url": "https://checkmk.com/werk/19033", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title", "tags": ["third-party-advisory"]}], "title": "Cross-site scripting in dashlet title", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.3.0", "versionEndExcluding": "2.3.0p46"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.4.0", "versionEndExcluding": "2.4.0p25"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.5.0b1", "versionEndExcluding": "2.5.0b3"}]}]}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-07T13:18:39.707466Z", "id": "CVE-2026-3466", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-07T13:18:48.034Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-3466", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-07T13:18:39.707466Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-07T13:18:44.039Z"}}], "cna": {"title": "Cross-site scripting in dashlet title", "credits": [{"lang": "en", "type": "reporter", "value": "Alex Williams (Pellera Technologies)"}], "impacts": [{"capecId": "CAPEC-592", "descriptions": [{"lang": "en", "value": "CAPEC-592: Stored XSS"}]}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.5, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N"}}], "affected": [{"vendor": "Checkmk GmbH", "product": "Checkmk", "versions": [{"status": "affected", "version": "2.2.0", "versionType": "semver"}, {"status": "affected", "version": "2.3.0", "lessThan": "2.3.0p46", "versionType": "semver"}, {"status": "affected", "version": "2.4.0", "lessThan": "2.4.0p25", "versionType": "semver"}, {"status": "affected", "version": "2.5.0b1", "lessThan": "2.5.0b3", "versionType": "semver"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://checkmk.com/werk/19033", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.3.0p46", "versionStartIncluding": "2.3.0"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.4.0p25", "versionStartIncluding": "2.4.0"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.5.0b3", "versionStartIncluding": "2.5.0b1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f", "shortName": "Checkmk", "dateUpdated": "2026-04-08T08:17:54.013Z"}}}, "cveMetadata": {"cveId": "CVE-2026-3466", "state": "PUBLISHED", "dateUpdated": "2026-04-08T08:17:54.013Z", "dateReserved": "2026-03-03T09:09:01.487Z", "assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f", "datePublished": "2026-04-07T12:08:50.132Z", "assignerShortName": "Checkmk"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:-:*:*:*:*:*:*", "matchCriteriaId": "C66704F1-0B5E-4B43-8748-987022F378F8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b1:*:*:*:*:*:*", "matchCriteriaId": "B068974F-6F67-4CBB-B567-FCED86E28F22", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b2:*:*:*:*:*:*", "matchCriteriaId": "EA70F36A-EEF6-48DC-B15E-055D0DE8A052", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b3:*:*:*:*:*:*", "matchCriteriaId": "B2017F38-38DB-4E96-B34F-160BC731CBBE", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b4:*:*:*:*:*:*", "matchCriteriaId": "0949F399-371B-409C-AF9F-32690D881440", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b5:*:*:*:*:*:*", "matchCriteriaId": "42E1E31A-B5CC-45F2-A2E5-3EEF735499BA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b6:*:*:*:*:*:*", "matchCriteriaId": "4B364FCA-500C-458E-B997-82CD0B1D24F9", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b7:*:*:*:*:*:*", "matchCriteriaId": "0B32E657-917B-482B-B6A4-3D3746992A4F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:b8:*:*:*:*:*:*", "matchCriteriaId": "2119C732-E024-4DA6-8E47-9E08E5E12602", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:i1:*:*:*:*:*:*", "matchCriteriaId": "4F0B99A8-A124-43BD-B8AA-EECC9112346F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p1:*:*:*:*:*:*", "matchCriteriaId": "3FB7221E-BE9F-4529-8E07-8AD547FA3208", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p10:*:*:*:*:*:*", "matchCriteriaId": "30A074AD-9499-46E3-AB67-D6CEE3AA01C3", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p11:*:*:*:*:*:*", "matchCriteriaId": "A8BD0240-A22B-4273-BD47-C35A8C12E127", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p12:*:*:*:*:*:*", "matchCriteriaId": "DAA5680F-1DD0-48AA-BB7F-15B27365F0FA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p13:*:*:*:*:*:*", "matchCriteriaId": "BC2F31CA-D4EB-44E6-9A09-5255D33F4A88", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p14:*:*:*:*:*:*", "matchCriteriaId": "CD80BD69-20C6-4E17-B165-98689179A5A1", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p15:*:*:*:*:*:*", "matchCriteriaId": "B044D43B-0233-4A0D-A356-B9F9324E2777", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p16:*:*:*:*:*:*", "matchCriteriaId": "7DE79896-EBE5-42F2-A126-2A871BBA1071", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p17:*:*:*:*:*:*", "matchCriteriaId": "51A44E69-EEA1-4B01-B7B3-5BF7B39819E3", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p18:*:*:*:*:*:*", "matchCriteriaId": "BCB65AEB-CF52-410B-92B1-2DCFB914FFA4", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p19:*:*:*:*:*:*", "matchCriteriaId": "B7E17FA6-9011-489C-9FA9-368CA2D86FAE", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p2:*:*:*:*:*:*", "matchCriteriaId": "7BCEB6FF-668F-4313-9264-0BF021AFC45F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p20:*:*:*:*:*:*", "matchCriteriaId": "F8B27218-A4FF-47BE-B578-6DB704478921", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p21:*:*:*:*:*:*", "matchCriteriaId": "8735357F-16A7-4408-9DDD-1C6796BADBE9", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p22:*:*:*:*:*:*", "matchCriteriaId": "4505098C-0A2B-481E-A3DF-D6DF8EFA4DE7", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p23:*:*:*:*:*:*", "matchCriteriaId": "C12AFCCF-014E-4EEB-8F04-F1ACE182BA98", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p24:*:*:*:*:*:*", "matchCriteriaId": "66B85557-D5EC-4AF4-B97A-D2B80A58B3B1", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p25:*:*:*:*:*:*", "matchCriteriaId": "233ECD21-FA72-43AF-8E4C-DAC27CC18F3C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p26:*:*:*:*:*:*", "matchCriteriaId": "8B4DB8EE-C10A-4097-8E66-2932BAEB732E", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p27:*:*:*:*:*:*", "matchCriteriaId": "8653402A-C5AA-4CB1-8742-A12CCBE59373", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p28:*:*:*:*:*:*", "matchCriteriaId": "77047A82-E6D5-4E84-9BEC-ACD2FDA91FAE", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p29:*:*:*:*:*:*", "matchCriteriaId": "2E44AE62-1746-410F-A28E-F8292E1F8D68", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p3:*:*:*:*:*:*", "matchCriteriaId": "E2342E2D-58B0-43E7-8C01-DF4678520F39", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p30:*:*:*:*:*:*", "matchCriteriaId": "B6C1AC39-5AE0-4FC8-93FF-966400B074F0", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p31:*:*:*:*:*:*", "matchCriteriaId": "68455233-52CD-44B8-8B02-D94BA84DA6A8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p32:*:*:*:*:*:*", "matchCriteriaId": "1C95A313-7665-4877-B421-0D20E3D3D54D", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p33:*:*:*:*:*:*", "matchCriteriaId": "0AEF278D-D782-4A2B-B1B8-19A21D151AA2", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p34:*:*:*:*:*:*", "matchCriteriaId": "B027FE8B-1802-4449-A0CB-6D15F9634559", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p35:*:*:*:*:*:*", "matchCriteriaId": "9B2BC55F-17AE-4BC4-824D-06BE9B15516C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p36:*:*:*:*:*:*", "matchCriteriaId": "1393F094-2D75-44CC-8783-4FDC7450D38E", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p37:*:*:*:*:*:*", "matchCriteriaId": "C1294EAE-5CB5-422F-B4C6-3A81B06DE49A", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p38:*:*:*:*:*:*", "matchCriteriaId": "2A347A18-7C59-40F5-8CBA-9F9A18B1E105", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p39:*:*:*:*:*:*", "matchCriteriaId": "442780BC-F984-47A3-9F5F-9A5049531C34", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p4:*:*:*:*:*:*", "matchCriteriaId": "1871B646-CA69-477F-B113-B901AC7B3934", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p40:*:*:*:*:*:*", "matchCriteriaId": "768541E6-C94D-4B32-9144-18D81A1AE047", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p41:*:*:*:*:*:*", "matchCriteriaId": "00793C7E-5C20-4696-B829-804CFA8690B5", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p42:*:*:*:*:*:*", "matchCriteriaId": "C03BBDDF-F96F-4A36-A7F5-7102A31EC606", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p43:*:*:*:*:*:*", "matchCriteriaId": "92088ED6-F6A8-400A-B015-4F4E02D55ABC", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p44:*:*:*:*:*:*", "matchCriteriaId": "AE5F4DD6-9473-4581-BD0E-1D916A7FEF85", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p45:*:*:*:*:*:*", "matchCriteriaId": "6541E323-356B-4B9F-B646-950400122EB3", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p46:*:*:*:*:*:*", "matchCriteriaId": "8FC315A6-9110-4302-A0B9-D88B4575852E", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p47:*:*:*:*:*:*", "matchCriteriaId": "331CD0EE-E519-4C9C-9124-C35EE12B5FF8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p5:*:*:*:*:*:*", "matchCriteriaId": "EEC65A72-CAE1-4E28-83EF-7ECAFE921BB6", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p6:*:*:*:*:*:*", "matchCriteriaId": "D8FDECBC-8213-495F-A932-C4310F7C1F87", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p7:*:*:*:*:*:*", "matchCriteriaId": "CB49BC95-6AA8-4F53-A3D6-E199BF756AAF", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p8:*:*:*:*:*:*", "matchCriteriaId": "050B6617-8FD4-47A6-BE4A-A52503A65812", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:p9:*:*:*:*:*:*", "matchCriteriaId": "4CA0FEC5-7036-47AF-A341-873B6C324B58", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:-:*:*:*:*:*:*", "matchCriteriaId": "83202950-840A-4CB7-AD96-CE62E84FABD8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b1:*:*:*:*:*:*", "matchCriteriaId": "1A020A77-7D84-4557-9B0B-D74A89BC1538", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b2:*:*:*:*:*:*", "matchCriteriaId": "D9770554-978B-4552-9E0E-CD6B6675243C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b3:*:*:*:*:*:*", "matchCriteriaId": "1883D2F4-CB96-4DDE-87E8-D1990A3FA092", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b4:*:*:*:*:*:*", "matchCriteriaId": "99AD6F39-AF67-4CB9-BED2-00CA75B9F5DB", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b5:*:*:*:*:*:*", "matchCriteriaId": "F08FE580-67D4-419C-AE4A-3B9EBC6A2838", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b6:*:*:*:*:*:*", "matchCriteriaId": "9DD5C67F-CD3E-400E-802D-8B52408A259F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:*", "matchCriteriaId": "310A2FA2-633A-48FB-A5C2-9A9A922E72E2", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p10:*:*:*:*:*:*", "matchCriteriaId": "3C0F1DC8-D9DF-4A7A-80DC-618FAB091375", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p11:*:*:*:*:*:*", "matchCriteriaId": "9B0A1E3E-1B5A-4346-95BC-DE6FF6EE14CA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p12:*:*:*:*:*:*", "matchCriteriaId": "EB52B2A7-BDC1-4A4F-ABAF-69C1BA8E83C2", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:*", "matchCriteriaId": "9F89225F-6969-4D89-B889-9CB09972825B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:*", "matchCriteriaId": "2A1B23EA-4571-4E4E-80BC-FD76FFD83FFB", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p15:*:*:*:*:*:*", "matchCriteriaId": "625A6998-5DAE-4538-9760-20523CCE501F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p16:*:*:*:*:*:*", "matchCriteriaId": "6EFD4461-2C37-418F-90AD-3A956B2D91C7", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p17:*:*:*:*:*:*", "matchCriteriaId": "88523633-844C-41FE-ADF1-74D6AA2BCE6C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p18:*:*:*:*:*:*", "matchCriteriaId": "5DA03E01-06D1-4E18-9C7B-CB6E49E5954B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p19:*:*:*:*:*:*", "matchCriteriaId": "91F171B6-7F9A-4B9B-B53D-277FE74124F9", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:*", "matchCriteriaId": "7D1993E3-C4F9-4D78-BD02-A0B22D93BF1F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p20:*:*:*:*:*:*", "matchCriteriaId": "34FF7D09-2129-4266-BF71-5424DC9E18B7", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p21:*:*:*:*:*:*", "matchCriteriaId": "246F0BA5-F927-4204-97F3-51870072599F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p22:*:*:*:*:*:*", "matchCriteriaId": "86ED47B6-58FB-4BAC-9C87-F7BC08AB3870", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p23:*:*:*:*:*:*", "matchCriteriaId": "2CFF173A-373B-4948-BD22-86C031B58E6B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p24:*:*:*:*:*:*", "matchCriteriaId": "90648825-55F7-472A-944E-7E5C787FAFB4", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p25:*:*:*:*:*:*", "matchCriteriaId": "6EE2BA6D-737A-4EEB-B8A2-91E9C61B70C1", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p26:*:*:*:*:*:*", "matchCriteriaId": "94FA8F05-267D-4B24-9AA3-A77FAD259310", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p27:*:*:*:*:*:*", "matchCriteriaId": "085B463B-633A-447A-B61C-99DD78B49A00", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p28:*:*:*:*:*:*", "matchCriteriaId": "F5DB112B-EE65-4BAB-AED8-716E618FD89C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p29:*:*:*:*:*:*", "matchCriteriaId": "CD9EDBC8-A6A7-4348-8446-1D1DDDACDC51", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:*", "matchCriteriaId": "B28A0C9D-072A-413C-8587-CD57CB918190", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p30:*:*:*:*:*:*", "matchCriteriaId": "CB0E10D1-2497-4CAE-ABA5-9F861C6A65DF", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p31:*:*:*:*:*:*", "matchCriteriaId": "9E64A46A-A1E2-4272-A7B8-36140AF2B889", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p32:*:*:*:*:*:*", "matchCriteriaId": "28568D2A-CA5B-42C2-8A32-FF783CB7A06F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p33:*:*:*:*:*:*", "matchCriteriaId": "F82F8827-B7B2-4C10-A42A-77781BC7B24B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p34:*:*:*:*:*:*", "matchCriteriaId": "F641BB83-8A0D-42D0-AB3E-7314918FDC9F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p35:*:*:*:*:*:*", "matchCriteriaId": "FCCE61D4-00B1-4D83-8FAE-8F2FA8F48E2F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p36:*:*:*:*:*:*", "matchCriteriaId": "FDB9628A-5A72-4DD5-9D4A-CBE13B0CFDF4", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p37:*:*:*:*:*:*", "matchCriteriaId": "E34FEBB1-0935-4363-B4FE-45901BFC9A5D", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p38:*:*:*:*:*:*", "matchCriteriaId": "5C43DE3C-0098-4613-B2A4-39607A63CE42", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p39:*:*:*:*:*:*", "matchCriteriaId": "7F5F5665-C2A9-4877-B3F6-59059A1EEFF6", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:*", "matchCriteriaId": "DF22D0A7-82B1-4598-B8C5-BDFE523D07F2", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p40:*:*:*:*:*:*", "matchCriteriaId": "7352D105-D045-427C-BA79-0B16D41139D9", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p41:*:*:*:*:*:*", "matchCriteriaId": "589909F7-D6E5-4B33-9735-2B97E0B37B87", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p42:*:*:*:*:*:*", "matchCriteriaId": "1BB8717F-F458-4E4C-8D8D-C4F68D4D4B05", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p43:*:*:*:*:*:*", "matchCriteriaId": "1F621FFA-A2C8-46AD-8690-A16CF8B3A048", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p44:*:*:*:*:*:*", "matchCriteriaId": "70807D99-2DAC-4363-BAB3-D047C79DBFBA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p45:*:*:*:*:*:*", "matchCriteriaId": "AD50FAD8-9878-4E77-B50D-5359ABFB94DA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:*", "matchCriteriaId": "20035AFB-75B4-4164-9833-A2FCAE24B577", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p6:*:*:*:*:*:*", "matchCriteriaId": "8BCBACEB-7130-455D-B4BE-243053C116DC", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p7:*:*:*:*:*:*", "matchCriteriaId": "156384E2-E04B-4153-A91F-3F307C9FEAE8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p8:*:*:*:*:*:*", "matchCriteriaId": "EEC0ED95-F43B-46D7-9AA0-A0FB1C32EF1D", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p9:*:*:*:*:*:*", "matchCriteriaId": "91C194C1-5292-4E2A-BB71-9C5CD3CE6194", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:*", "matchCriteriaId": "022C075A-4B04-4141-A7D7-F93C9A7CE0FD", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:*", "matchCriteriaId": "60C00469-0CD1-4E9C-8370-CE113842056C", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:*", "matchCriteriaId": "179905FC-821F-4214-A872-E4E3702419D1", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:*", "matchCriteriaId": "04956994-D5A8-45EE-9DC2-8A1D3058CE8E", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:*", "matchCriteriaId": "8868449B-7259-4C3B-8344-0EFE0BA3A97E", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:*", "matchCriteriaId": "BBDF3A13-582F-43D2-B42F-0DC42D4FBFBA", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b6:*:*:*:*:*:*", "matchCriteriaId": "DAF500B3-AA6A-4618-BC7E-0F214B795E0F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p1:*:*:*:*:*:*", "matchCriteriaId": "1CFE68AB-1F57-497C-9229-29ED3A73D87F", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p10:*:*:*:*:*:*", "matchCriteriaId": "577F9F72-2FDA-4F87-A840-05158F2368B8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p11:*:*:*:*:*:*", "matchCriteriaId": "6F3AD894-660B-41FC-B910-899A764A00B6", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p12:*:*:*:*:*:*", "matchCriteriaId": "21853BB4-1BB5-40E3-82E2-253899D898ED", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p13:*:*:*:*:*:*", "matchCriteriaId": "E7963D66-A89A-4167-A2BA-DFF89B439EAE", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p14:*:*:*:*:*:*", "matchCriteriaId": "42099281-2026-4507-A20B-C669C206ADB6", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p15:*:*:*:*:*:*", "matchCriteriaId": "29A44B1E-83CD-4A3D-AFFD-82AAC7760293", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p16:*:*:*:*:*:*", "matchCriteriaId": "B4B87192-D81E-4269-ABF3-8D700BB531B0", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p17:*:*:*:*:*:*", "matchCriteriaId": "3D35CD46-F8CF-49C3-8CD9-53E1ED038023", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p18:*:*:*:*:*:*", "matchCriteriaId": "D5B5649C-C0BA-4905-98DD-CA606DD2B886", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p19:*:*:*:*:*:*", "matchCriteriaId": "29148EA6-675F-4B35-81BF-B8254C1EB675", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p2:*:*:*:*:*:*", "matchCriteriaId": "B11306B4-1092-470C-BA87-DBD02A18A74B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p20:*:*:*:*:*:*", "matchCriteriaId": "9E85F65E-A103-425E-8AD5-7EE9F093B463", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p21:*:*:*:*:*:*", "matchCriteriaId": "65DF329A-4E2D-4138-99C5-6765789051CB", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p22:*:*:*:*:*:*", "matchCriteriaId": "1B9B340D-84F6-4CE9-A627-E26F340B3705", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p23:*:*:*:*:*:*", "matchCriteriaId": "CCAD0F84-7273-4FDF-B238-177E1C4D5F5B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p24:*:*:*:*:*:*", "matchCriteriaId": "860D2E5C-6277-44F5-A3FE-C085F76B8514", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p3:*:*:*:*:*:*", "matchCriteriaId": "74F78C48-030A-48A1-B69E-04C4EA5CCC12", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p4:*:*:*:*:*:*", "matchCriteriaId": "8701A914-774B-4E3B-A651-4A9FD19A187A", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p5:*:*:*:*:*:*", "matchCriteriaId": "19E40054-C44D-4C4C-B077-0333D8201E5B", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p6:*:*:*:*:*:*", "matchCriteriaId": "0E2D2F49-32B2-42AA-B99E-7C39403CF104", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p7:*:*:*:*:*:*", "matchCriteriaId": "ACE440F8-EBF5-4DBB-A215-57D770C66219", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p8:*:*:*:*:*:*", "matchCriteriaId": "1A94395D-DDCE-4977-89CA-46F71C3CA2B8", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:p9:*:*:*:*:*:*", "matchCriteriaId": "9513876C-8DF0-4A59-864F-8401BAA43376", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*", "matchCriteriaId": "F8943BB3-1487-494C-B4EB-89EB0B18B6A2", "vulnerable": true}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*", "matchCriteriaId": "5342045D-CB9F-4663-9538-8B657C9AC833", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard."}], "id": "CVE-2026-3466", "lastModified": "2026-04-14T15:39:45.173", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@checkmk.com", "type": "Secondary"}]}, "published": "2026-04-07T13:16:47.150", "references": [{"source": "security@checkmk.com", "tags": ["Vendor Advisory"], "url": "https://checkmk.com/werk/19033"}, {"source": "security@checkmk.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/checkmk-stored-cross-site-scripting-in-dashlet-title"}], "sourceIdentifier": "security@checkmk.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@checkmk.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.2.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.3.0,2.3.0p46)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.4.0,2.4.0p25)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.5.0b1,2.5.0b3)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Checkmk", "source": "cna", "vendor": "Checkmk GmbH"}, "product": "checkmk", "vendor": "checkmk"}], "analysis": {"en": {"generated_at": "2026-04-14T16:30:57.918133+00:00", "value": {"mitigation_remediation": ["Apply the latest Checkmk release: upgrade to 2.3.0p46 or later, 2.4.0p25 or later, or 2.5.0b3 or later; any newer stable release is acceptable. ", "If an upgrade is not immediately possible, restrict permission to create dashboards to a minimal set of trusted administrators and audit dashboard changes. ", "Consider removing or disabling the ability to use hyperlink markup in dashlet titles during the interim. ", "Monitor user activity for unexpected dashboard edits and validate that shared dashboards do not contain unfamiliar links. ", "Stay informed of vendor advisories and verify that the applied patch addresses the XSS issue."], "summary": {"action": "Immediate Patch", "impact": "Stored cross\u2011site scripting (XSS) via malicious dashlet title links"}, "threat_synthesis": {"affected_systems": "The flaw affects Checkmk version 2.2.0 (end\u2011of\u2011life), Checkmk 2.3.0 versions prior to 2.3.0p46, Checkmk 2.4.0 prior to 2.4.0p25, and Checkmk 2.5.0 beta before 2.5.0b3. It is specific to the Checkmk application delivered by Checkmk GmbH.", "description_and_impact": "Insufficient sanitization of links embedded in dashboard dashlet titles allows an attacker with dashboard\u2011creation privileges to store a malicious URL. When a victim visits the shared dashboard and clicks the crafted link, the attacker's script executes in the victim\u2019s browser, potentially stealing session information, defacing the interface or performing other malicious client\u2011side actions. The vulnerability is a classic stored XSS and can be leveraged to compromise user accounts and further spread attacks inside the organization.", "risk_and_exploitability": "The CVSS score of 8.5 classifies the issue as high severity. EPSS is below 1\u202f%, indicating that large\u2011scale exploitation is not common, and the vulnerability is not listed in the CISA KEV catalogue. Exploitation requires an attacker to create a malicious dashboard and a victim with access to the shared dashboard who clicks the injected link. The attack vector is client\u2011side; however, once the victim clicks, the attacker gains full client\u2011side control. Consequently, the risk to an organization that permits dashboard creation by multiple users is non\u2011negligible and warrants swift remediation."}}}}, "created": "2026-04-08T19:38:26.866049+00:00", "updated": "2026-04-14T16:41:06.631515+00:00", "vendors": ["checkmk", "checkmk$PRODUCT$checkmk"]}