CVE-2026-28348
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.
- Affected products
- Lxml Html Clean
- Fedoralovespython Lxml Html Clean
- < 0.4.4
- Fix
- Available
- CVSS 3.1
- 6.1 MEDIUM
- EPSS
- 0.2% (13th percentile)
- Weakness
- CWE-116
- NVD status
- Analyzed
- Published
- 2026-03-05
CVE-2026-28348 at NVD
No indexed exploits for CVE-2026-28348 yet
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No exploit for CVE-2026-28348 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.