What is CVE-2026-91206?

CVE-2026-91206 is a medium-severity vulnerability in Apache Software Foundation Roller, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-28.

How severe is CVE-2026-91206?

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

XSS in Apache Software Foundation Roller

CVE-2026-91206

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows a remote attacker to perform reflected cross-site scripting through the optional LDAP comment authenticator, which writes request parameter values into its HTML form without escaping. This affects only sites configured to use LdapCommentAuthenticator, and a victim whose session has already loaded the authenticator form must follow a crafted link. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which escapes the reflected values.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-28 · last modified 2026-09-28.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Apache Software Foundation Roller — versions 6.1.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/apache/roller/pull/191 (patch)
lists.apache.org/thread/tljwqdttq8tgg6hr8sxlcnwpxl6pch4s (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-91206?: CVE-2026-91206 is a medium-severity vulnerability in Apache Software Foundation Roller, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-28.
How severe is CVE-2026-91206?: Medium severity. CVSS v3 base score is 6.1 out of 10.