CVE-2026-80180

Apache Allura: Stored XSS via markdown HTML processing

State: Published
Severity: 6.1 Medium
Published: Sep 4, 2026
Updated: Sep 4, 2026
Reserved: Aug 25, 2026

Description

Stored XSS via markdown HTML processing in Apache Allura.

This issue affects Apache Allura: from through 1.20.0.

Users are recommended to upgrade to version 1.21.0, which fixes the issue.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Affected Products

Product	Versions
Apache AlluraApache Software Foundation	1.20.0 and earlierAffected

References

https://lists.apache.org/thread/rjo2hjhp76qhl9f3br8jq909mohvzkpqvendor-advisory
http://www.openwall.com/lists/oss-security/2026/09/03/3

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