CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2021-23980
Medium (6.1) in mozilla bleach. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in bleach 3.3.0.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mozilla:bleach
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vv2x-vrpj-qqpq | PyPI | bleach | <3.3.0 | 3.3.0 |
| PYSEC-2021-865 | PyPI | bleach | <3.3.0 | 3.3.0 |