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.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980 | Exploit Issue Tracking |
| https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980 | Exploit Issue Tracking |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq | Vendor Advisory |
| https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq | Vendor Advisory |
Configurations
History
19 Mar 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980 - Exploit, Issue Tracking | |
| References | () https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq - Vendor Advisory |
Information
Published : 2023-02-16 22:15
Updated : 2025-03-19 16:15
NVD link : CVE-2021-23980
Mitre link : CVE-2021-23980
JSON object : View
Products Affected
mozilla
- bleach
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')