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CVE-2021-43818

Published: 13 December 2021

lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

Priority

Medium

CVSS 3 base score: 7.1

Status

Package Release Status
lxml
Launchpad, Ubuntu, Debian
bionic
Released (4.2.1-1ubuntu0.6)
focal
Released (4.5.0-1ubuntu0.5)
hirsute
Released (4.6.3-1ubuntu0.2)
impish
Released (4.6.3+dfsg-0.1ubuntu0.2)
jammy
Released (4.7.1-1)
trusty
Released (3.3.3-1ubuntu0.2+esm5)
upstream Needs triage

xenial
Released (3.5.0-1ubuntu0.4+esm2)