CVE-2021-23980

Advisory

Bleach 3.3.0 includes a fix for 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.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23980
• https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980
• https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq