Is CVE-2026-82546 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-82546 being exploited in the wild.

How severe is CVE-2026-82546?

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-2026-82546?

A patch was published on 2026-09-06: Trackback support removed in 6.1.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-82546 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-82546?

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.

CVE-2026-82546: Apache Roller stored cross-site scripting in Trackback comments

CVE-2026-82546 · Severity: medium · CVSS 6.1 · Published 2026-09-28

Apache Roller is a blogging platform that allows visitors to leave comments and trackbacks on published entries. An unauthenticated attacker can inject malicious code into a comment's author URL via the Trackback feature, which gets stored and rendered to other visitors. When a visitor clicks the malicious link, the attacker's script executes in the context of the blog, potentially stealing session cookies or performing unauthorized actions on behalf of the victim.

Technologies: Apache Roller. Vendors: Apache.

Quick answers

Is CVE-2026-82546 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-82546 being exploited in the wild.
How severe is CVE-2026-82546?: 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-2026-82546?: A patch was published on 2026-09-06: Trackback support removed in 6.1.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-82546 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-82546?: 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

This is a stored cross-site scripting (XSS) vulnerability in Apache Roller's Trackback endpoint that accepts unauthenticated comment-author URLs. The vulnerability exists because Trackback comments are approved by default and the URL field is rendered without proper sanitization or escaping. An attacker can craft a non-HTTP(S) URL (e.g., javascript: scheme) that executes when clicked, affecting any blog visitor. The fix removes Trackback support entirely and properly escapes comment-author links.

Affected products

Apache Roller 6.1.5 and earlier

Timeline

2026-09-28: disclosed
2026-09-06: patched: Trackback support removed in 6.1.6

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.