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Status published
Unknown
CVE-2018-19787
An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
More from lxml
View All →CVE-2022-2309
NULL Pointer Dereference in lxml/lxml
Medium
5.3
CVE-2021-43818
HTML Cleaner allows crafted and SVG embedded scripts to pass through
High
8.2
CVE-2021-28957
An XSS vulnerability was discovered in python-lxml's clean module versions...
Unknown
0
CVE-2014-3146
Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before...
Unknown
0
Affected Vendor
lxml
View all reports →Affected Software
lxml, debian linux, ubuntu linux
Vulnerable Versions:
0, 8.0, 12.04, 14.04, 16.04, 18.04
Timeline
Official Publish:
December 2nd, 2018
Last Modified:
December 18th, 2025
Added to House:
July 20th, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.