CVE-2026-28350

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-116

Affected software

No affected versions have been published.

Timeline

Published: Mar 5, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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