What is CVE-2026-73237?

CVE-2026-73237 is a medium-severity vulnerability in Apache Software Foundation Allura, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2026-08-12.

How severe is CVE-2026-73237?

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

XSS in Apache Software Foundation Allura

CVE-2026-73237

XSS vulnerability in Markdown handling in Apache Allura. This issue affects Apache Allura: from 1.10.0 before 1.19.1. Users are recommended to upgrade to version 1.19.1, which fixes the issue.

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

Apache Software Foundation Allura — versions 1.10.0

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

security@apache.org
security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-73237?: CVE-2026-73237 is a medium-severity vulnerability in Apache Software Foundation Allura, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2026-08-12.
How severe is CVE-2026-73237?: Medium severity. CVSS v3 base score is 6.1 out of 10.