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Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package python38-devel:3.8/python38-Cython  (opens in a new tab)

Threat Intelligence

EPSS
4.03% (90th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PYTHON38DEVEL-5654020
  • published28 May 2023
  • disclosed9 Nov 2021
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Introduced: 9 Nov 2021

CVE-2021-28957  (opens in a new tab)
CWE-79  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python38-devel:3.8/python38-Cython package and not the python38-devel:3.8/python38-Cython package as distributed by AlmaLinux.

An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.

References