# CVE-2026-82376: Apache Roller XML External Entity Injection

Source: https://junglewise.ai/threats/cve-2026-82376-improper-restriction-of-xml-external-entity-reference-in-apache  
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-2026-82376 · Severity: high · CVSS 7.7 · Published 2026-09-28

Apache Roller, a web publishing platform, contains an XML External Entity (XXE) vulnerability in its legacy trackback feature that allows authenticated bloggers to trigger file disclosure. An attacker with entry-editing rights can craft a malicious trackback response that forces the server to parse external XML entities, exposing sensitive files readable by the Roller process. The vulnerable trackback feature has been removed in version 6.1.6.

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

## Quick answers

**Is CVE-2026-82376 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82376 being exploited in the wild.

**How severe is CVE-2026-82376?** High severity, with a CVSS score of 7.7, published 28 September 2026.

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

**Is there a fix for CVE-2026-82376?** A patch was published on 2026-09-05: Legacy trackback functionality removed in version 6.1.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-82376 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-82376?** 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 XXE injection in the outbound trackback response parser of Apache Roller 6.1.5, exposed through a hidden but directly-reachable action. An authenticated user with entry-editing privileges can submit a crafted trackback response with external entity definitions that are parsed without disabling entity resolution, leading to disclosure of arbitrary files accessible to the Roller process. The fix involves removal of the legacy outbound trackback parser entirely in version 6.1.6.

## Affected products

- Apache Roller 6.1.5 and earlier

## Timeline

- 2026-09-28: disclosed
- 2026-09-05: patched: Legacy trackback functionality removed in version 6.1.6

## References

- [https://github.com/apache/roller/pull/163](https://github.com/apache/roller/pull/163)
- [https://lists.apache.org/thread/dxqmd3873q87h06xpjjc9lnvp4jblz0l](https://lists.apache.org/thread/dxqmd3873q87h06xpjjc9lnvp4jblz0l)

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