What is CVE-2026-28350?

CVE-2026-28350 is a medium-severity vulnerability in Fedora-python Lxml_html_clean, classified under Improper Encoding or Escaping of Output. CVSS score: 6.1/10. Published 2026-03-05.

How severe is CVE-2026-28350?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Fedora-python Lxml_html_clean

CVE-2026-28350

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…

EPSS: 0.000 (4.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Fedora-python Lxml_html_clean — versions < 0.4.4

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-xvp8-3mhv-424c (x_refsource_CONFIRM)
https://github.com/fedora-python/lxml_html_clean/commit/9c5612ca33b941eec4178abf8a5294b103403f34 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-28350?: CVE-2026-28350 is a medium-severity vulnerability in Fedora-python Lxml_html_clean, classified under Improper Encoding or Escaping of Output. CVSS score: 6.1/10. Published 2026-03-05.
How severe is CVE-2026-28350?: Medium severity. CVSS v3 base score is 6.1 out of 10.