Cross-site Scripting (XSS) Affecting python3-lxml-devel package, versions <4.7.1-3.7.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
3.98% (90th percentile)

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  • Snyk IDSNYK-SLES154-PYTHON3LXMLDEVEL-10115690
  • published11 May 2025
  • disclosed10 Mar 2022

Introduced: 10 Mar 2022

CVE-2020-27783  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 python3-lxml-devel to version 4.7.1-3.7.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-lxml-devel package and not the python3-lxml-devel package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

CVSS Base Scores

version 3.1