CVE-2026-118413: Apache Roller stored cross-site scripting in blogroll import

CVE-2026-118413 · Severity: medium · CVSS 5.4 · Published 2026-11-11

Apache Roller is a blogging platform that allows administrators to manage blog content and theme settings. A vulnerability in versions 4.0 through 6.1.6 allows a weblog administrator to inject malicious scripts into blogroll links through OPML file imports. These scripts would execute in the browsers of visitors reading the blog, potentially stealing credentials or redirecting readers to malicious sites.

Technologies: Apache Roller. Vendors: Apache.

Quick answers

Is CVE-2026-118413 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-118413 being exploited in the wild.
How severe is CVE-2026-118413?
Medium severity, with a CVSS score of 5.4, published 11 November 2026.
Which products and versions are affected?
Apache Roller 4.0 through 6.1.6.
Is there a fix for CVE-2026-118413?
Yes: fixed in Apache Roller 6.1.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-118413 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-118413?
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.

How to fix

  • Fixed in: Apache Roller 6.1.7

Technical details

The vulnerability is a stored cross-site scripting (XSS) flaw in the OPML import function and blogroll display logic. Blogroll links imported from OPML files were not validated, and templates printed them without HTML escaping, allowing an authenticated administrator to inject arbitrary JavaScript. The fix restricts OPML imports to accept only absolute http/https URLs and escapes URLs in template output through a whitelist of safe URL schemes.

Affected products

  • Apache Roller 4.0 through 6.1.6

Timeline

  • 2026-11-11: disclosed
  • 2026-10-30: patched: Fix merged in PR #221 on October 30, 2026

References

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