Vulnerability Monitor

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CVE-2021-23980

A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, or xmp in allowed tags the keyword argument strip_comments=False Note: none of the above tags are in the default allowed tags and strip_comments defaults to True.

Published

2023-02-16T22:15:10.713

Last Modified

2025-03-19T16:15:15.190

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

Weaknesses

Type: Primary
CWE-79
Type: Secondary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	bleach	< 3.3.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980 Exploit, Issue Tracking ([email protected])
https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980 Exploit, Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)