# CVE-2026-82384: Apache Roller XML-RPC deserialization of untrusted data

Source: https://junglewise.ai/threats/cve-2026-82384-deserialization-of-untrusted-data-in-apache-roller-6-1-5-allows  
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-2026-82384 · Severity: critical · CVSS 9.8 · Published 2026-09-28

Apache Roller is a blogging platform that includes an XML-RPC web service for remote publishing. A flaw in version 6.1.5 allows an unauthenticated attacker to send specially crafted requests to the XML-RPC endpoint that deserialize malicious data, leading to remote code execution on the server. The vulnerability exists even when XML-RPC is disabled in the application configuration.

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

## Quick answers

**Is CVE-2026-82384 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82384 being exploited in the wild.

**How severe is CVE-2026-82384?** Critical severity, with a CVSS score of 9.8, published 28 September 2026.

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

**Is there a fix for CVE-2026-82384?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-82384 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-82384?** 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 XML-RPC servlet is configured to accept non-standard vendor extension types that are deserialized during request parsing before any authentication checks occur. The servlet endpoint remains accessible regardless of whether the global XML-RPC feature is enabled or disabled, allowing attackers to trigger deserialization of untrusted bytes. This can lead to arbitrary code execution with the privileges of the application.

## Affected products

- Apache Roller 6.1.5

## Timeline

- 2026-09-28: disclosed

## References

- [https://github.com/apache/roller/pull/171](https://github.com/apache/roller/pull/171)
- [https://lists.apache.org/thread/21p1dh6x179gmcdpw84kkx9yclrdp410](https://lists.apache.org/thread/21p1dh6x179gmcdpw84kkx9yclrdp410)

## Related threats

- [Apache Roller XML-RPC deserialization remote code execution](https://junglewise.ai/threats/cve-2026-123374-deserialization-of-untrusted-data-vulnerability-in-apache-roller)
- [Apache Roller missing authorization in entry editor](https://junglewise.ai/threats/cve-2026-122300-missing-authorization-vulnerability-in-apache-roller-4-0-through)
- [Apache Roller stored cross-site scripting in weblog menu](https://junglewise.ai/threats/cve-2026-118414-improper-neutralization-of-input-during-web-page-generation)
- [Apache Roller stored cross-site scripting in blogroll import](https://junglewise.ai/threats/cve-2026-118413-improper-neutralization-of-input-during-web-page-generation)
- [Apache Roller CSRF allowing unauthenticated administrator account creation](https://junglewise.ai/threats/cve-2026-118411-cross-site-request-forgery-csrf-in-apache-roller-5-0-1-through-6)