Bug 2374555 (CVE-2025-6430) - CVE-2025-6430 firefox: Content-Disposition header ignored when a file is included in an embed or object tag
Summary: CVE-2025-6430 firefox: Content-Disposition header ignored when a file is incl...
Keywords:
Status: NEW
Alias: CVE-2025-6430
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-06-24 13:01 UTC by OSIDB Bzimport
Modified: 2025-06-24 19:45 UTC (History)
5 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-06-24 13:01:12 UTC 
When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `&lt;embed&gt;` or `&lt;object&gt;` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability affects Firefox < 140 and Firefox ESR < 128.12.
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