Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.

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Source ID Title
EUVD EUVD EUVD-2025-25227 Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks This vulnerability affects Firefox for iOS < 142.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 13 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks This vulnerability affects Firefox for iOS < 142. Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.

Thu, 30 Oct 2025 16:30:00 +0000

Type Values Removed Values Added
Title Content-Disposition headers incorrectly ignored for some MIME types

Thu, 21 Aug 2025 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla firefox
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:iphone_os:*:*
Vendors & Products Mozilla firefox

Thu, 21 Aug 2025 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple ios
Mozilla
Mozilla firefox For Ios
Vendors & Products Apple
Apple ios
Mozilla
Mozilla firefox For Ios

Wed, 20 Aug 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-640
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 19 Aug 2025 21:00:00 +0000

Type Values Removed Values Added
Description Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks This vulnerability affects Firefox for iOS < 142.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-04-13T14:31:50.247Z

Reserved: 2025-08-05T13:26:34.686Z

Link: CVE-2025-55030

cve-icon Vulnrichment

Updated: 2025-08-20T14:02:15.650Z

cve-icon NVD

Status : Modified

Published: 2025-08-19T21:15:28.210

Modified: 2026-04-13T15:17:02.667

Link: CVE-2025-55030

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-21T12:31:57Z

Weaknesses