CVE-2018-19787
MEDIUM6.1EPSS 0.53%lxml - security update
Published: 5/13/2022Modified: 4/28/2026
Description
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.
Affected packages (4)
- Debian/lxmlfrom 0, < 4.2.5-1
- Debian/lxmlfrom 0, < 3.7.1-1+deb9u1
- PyPI/lxmlfrom 0, < 4.2.5
- PyPI/lxmlfrom 0, < 6be1d081b49c97cfd7b3fbd934a193b668629109 | from 0, < 4.2.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (12)
- ADVISORYhttps://github.com/advisories/GHSA-xp26-p53h-6h2p
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-19787
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-19787
- WEBhttps://github.com/lxml/lxml
- WEBhttps://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2018-12.yaml
- WEBhttps://lists.debian.org/debian-lts-announce/2018/12/msg00001.html
- WEBhttps://lists.debian.org/debian-lts-announce/2020/11/msg00044.html
- WEBhttps://usn.ubuntu.com/3841-1
- WEBhttps://usn.ubuntu.com/3841-1/
- WEBhttps://usn.ubuntu.com/3841-2
- WEBhttps://usn.ubuntu.com/3841-2/