# CVE-2026-61487: Apache ActiveMQ auth bypass via temporary composite destinations

Source: https://junglewise.ai/threats/cve-2026-61487-apache-activemq-auth-bypass-via-temporary-composite-destinations  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-28. Updated: 2026-07-28  
License: CC BY 4.0 with a link back

CVE-2026-61487 · Severity: info · CVSS 0 · Published 2026-07-28

Apache ActiveMQ is a popular open-source message broker used to facilitate communication between different software applications. A security flaw allows a user with low-level access to bypass security rules and send unauthorized messages to restricted data queues. This could allow an attacker to inject malicious data or disrupt business operations by interacting with protected message streams they should not have access to.

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

## Quick answers

**Is CVE-2026-61487 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-61487 being exploited in the wild.

**How severe is CVE-2026-61487?** Informational severity, with a CVSS score of 0, published 28 July 2026.

**Which products and versions are affected?** Apache ActiveMQ < 5.19.9, 6.0.0 to < 6.2.8.

**Is there a fix for CVE-2026-61487?** 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-2026-61487 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-61487?** Check whether you run Apache ActiveMQ 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

An improper authorization vulnerability exists in Apache ActiveMQ's handling of temporary composite destinations. An authenticated attacker with low privileges can bypass per-destination write ACLs by sending messages to a temporary composite destination whose physical name contains a comma-separated list of legitimate, restricted queues. Because the broker marks the destination as 'temporary', it incorrectly skips standard authorization checks, allowing the attacker to publish messages to any queue in the composite list. This affects ActiveMQ Broker, ActiveMQ All, and the main ActiveMQ distribution across versions 5.x and 6.x. Users should upgrade to 5.19.9, 6.2.8, or 6.3.0 to resolve the issue.

## Affected products

- Apache ActiveMQ Broker < 5.19.9, 6.0.0 to < 6.2.8
- Apache ActiveMQ All < 5.19.9, 6.0.0 to < 6.2.8
- Apache ActiveMQ < 5.19.9, 6.0.0 to < 6.2.8

## Timeline

- 2026-07-27: disclosed: Initial disclosure on oss-security mailing list
- 2026-07-28: advisory: NVD publication date

## References

- [https://repo.maven.apache.org/maven2](https://repo.maven.apache.org/maven2)
- [https://lists.apache.org/thread/6rwn6cq65dy4lhmsmjf2bxnhbmhkcswz](https://lists.apache.org/thread/6rwn6cq65dy4lhmsmjf2bxnhbmhkcswz)
- [http://www.openwall.com/lists/oss-security/2026/07/27/8](http://www.openwall.com/lists/oss-security/2026/07/27/8)

## Related threats

- [ActiveMQ EJBd credential exposure in datasource lookup](https://junglewise.ai/threats/cve-2026-97867-the-ejbd-remote-protocol-returns-datasource-connection-details)
- [Apache ActiveMQ improper input validation in connection state handling](https://junglewise.ai/threats/cve-2026-108946-improper-input-validation-vulnerability-in-apache-activemq)
- [Apache ActiveMQ input validation bypass in LDAPAuthorizationMapPlugin](https://junglewise.ai/threats/cve-2026-108500-input-validation-vulnerability-in-apache-activemq-configured-to)
- [Apache ActiveMQ improper authorization cache invalidation](https://junglewise.ai/threats/cve-2026-111822-improper-invalidation-of-cached-authorizations-vulnerability-in)
- [Apache ActiveMQ improper input validation in durable subscriptions](https://junglewise.ai/threats/cve-2026-111821-improper-input-validation-vulnerability-in-apache-activemq)