CVE-2018-19787

Published: 02 December 2018

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.

Priority

Medium

CVSS 3 base score: 6.1

Status

Package Release Status
lxml
Launchpad, Ubuntu, Debian
Upstream
Released (4.2.5-1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.2.1-1ubuntu0.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (3.5.0-1ubuntu0.1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.3.3-1ubuntu0.2)
Patches:
Upstream: https://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109