Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package python-lxml.src (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-PYTHONLXMLSRC-14922880
- published14 Jan 2026
- disclosed9 Sept 2018
Introduced: 9 Sep 2018
CVE-2018-19787 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-lxml.src package and not the python-lxml.src package as distributed by RHEL.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1660235
- https://access.redhat.com/security/cve/CVE-2018-19787
- https://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109
- https://lists.debian.org/debian-lts-announce/2018/12/msg00001.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00044.html
- https://usn.ubuntu.com/3841-1/
- https://usn.ubuntu.com/3841-2/