CVE-2026-80180

EUVD-2026-70921
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 10.78%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apacheallura
𝑥
≤ 1.20.0
CNA
Common Weakness Enumeration
References
https://lists.apache.org/thread/rjo2hjhp76qhl9f3br8jq909mohvzkpq
http://www.openwall.com/lists/oss-security/2026/09/03/3