Bug 2444963 (CVE-2026-28350) - CVE-2026-28350 lxml_html_clean: lxml_html_clean: Web link hijacking due to improper base tag handling
Summary: CVE-2026-28350 lxml_html_clean: lxml_html_clean: Web link hijacking due to im...
Keywords:
Status: NEW
Alias: CVE-2026-28350
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2444971
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-05 21:01 UTC by OSIDB Bzimport
Modified: 2026-03-05 21:30 UTC (History)
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Description OSIDB Bzimport 2026-03-05 21:01:59 UTC 
lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the <base> tag passes through the default Cleaner configuration. While page_structure=True removes html, head, and title tags, there is no specific handling for <base>, allowing an attacker to inject it and hijack relative links on the page. This issue has been patched in version 0.4.4.
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