CVE-2026-28348
MEDIUMlxml_html_clean <0.4.4 - XSS
Title source: llmDescription
lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the _has_sneaky_javascript() method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression() filters, allowing external CSS loading or XSS in older browsers. This issue has been patched in version 0.4.4.
Scores
CVSS v3
6.1
EPSS
0.0003
EPSS Percentile
7.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Classification
CWE
CWE-116
Status
published
Affected Products (1)
fedoralovespython/lxml_html_clean
< 0.4.4
Timeline
Published
Mar 05, 2026
Tracked Since
Mar 06, 2026