Apache Allura <=1.20.0 Stored XSS via Markdown HTML
CVE-2026-80180 Published on September 4, 2026
Apache Allura: Stored XSS via markdown HTML processing
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.
Vulnerability Analysis
CVE-2026-80180 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-80180 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-80180
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Affected Versions
Apache Software Foundation Apache Allura:- Before and including 1.20.0 is affected.