Bug 2507008 - CVE-2026-65903 fbthrift: DOMPurify: Security bypass allows injection of malicious content [fedora-all]
Summary: CVE-2026-65903 fbthrift: DOMPurify: Security bypass allows injection of malic...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: fbthrift
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Michel Lind
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["f085dedd-3200-4733-a86f-f...
Depends On:
Blocks: CVE-2026-65903
TreeView+ depends on / blocked
 
Reported: 2026-07-25 08:03 UTC by Ganesh
Modified: 2026-07-25 08:03 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Ganesh 2026-07-25 08:03:19 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.
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