Vulnerability · Published Sep 4, 2026 · Assigned by apache
CVE-2026-80180Apache Allura: Stored XSS via markdown HTML processing
Medium 6.1
In plain English
A medium-severity cross-site scripting in Apache Allura from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Allura | 0 – through 1.20.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N