# CVE-2026-91206: Apache Roller cross-site scripting in LDAP comment form

Source: https://junglewise.ai/threats/cve-2026-91206-improper-neutralization-of-input-during-web-page-generation-cross  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-91206 · Severity: medium · CVSS 6.1 · Published 2026-09-28

Apache Roller is a blog publishing platform used to manage web content. A flaw in the optional LDAP comment authenticator fails to escape user input when displaying form fields, allowing an attacker to inject malicious scripts. This only affects instances configured to use the LDAP authenticator, and requires the victim to click a malicious link after having loaded the authentication form.

Technologies: [Apache Roller](https://junglewise.ai/threats/technologies/roller). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-91206 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91206 being exploited in the wild.

**How severe is CVE-2026-91206?** Medium severity, with a CVSS score of 6.1, published 28 September 2026.

**Which products and versions are affected?** Apache Roller 6.1.5 and earlier.

**Is there a fix for CVE-2026-91206?** A patch was published on 2026-09-17: Fix merged in PR #191, available in version 6.1.6 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-91206 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-91206?** Check whether you run Apache Roller at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an improper input neutralization (reflected XSS) in the LdapCommentAuthenticator component, which writes unescaped request parameters directly into HTML form fields. The attack requires network access and a victim with an active session who follows a crafted link. The fix, applied in version 6.1.6, properly escapes reflected values before rendering.

## Affected products

- Apache Roller 6.1.5 and earlier

## Timeline

- 2026-09-28: disclosed
- 2026-09-17: patched: Fix merged in PR #191, available in version 6.1.6 and later

## References

- [https://github.com/apache/roller/pull/191](https://github.com/apache/roller/pull/191)
- [https://lists.apache.org/thread/tljwqdttq8tgg6hr8sxlcnwpxl6pch4s](https://lists.apache.org/thread/tljwqdttq8tgg6hr8sxlcnwpxl6pch4s)

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