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


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
2.44% (84th percentile)

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  • Snyk IDSNYK-SLES154-PYTHON3LXML-10115677
  • published11 May 2025
  • disclosed10 Mar 2022

Introduced: 10 Mar 2022

CVE-2018-19787  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 python3-lxml 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 package and not the python3-lxml package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to CVE-2014-3146.

CVSS Base Scores

version 3.1