Cross-site Scripting (XSS) Affecting python-bleach package, versions <3.2.1-2.1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (40th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PYTHONBLEACH-1090010
  • published31 Mar 2021
  • disclosed16 Feb 2023

Introduced: 31 Mar 2021

CVE-2021-23980  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Debian:unstable python-bleach to version 3.2.1-2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-bleach package and not the python-bleach package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1