Improper Authorization Affecting org.apache.activemq:activemq-broker package, versions [,5.19.9)[6.0.0,6.2.8)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Aug 2026
- disclosed28 Jul 2026
- creditClaude and Ada Logics
Introduced: 28 Jul 2026
CVE-2026-61487 (opens in a new tab)How to fix?
Upgrade org.apache.activemq:activemq-broker to version 5.19.9, 6.2.8 or higher.
Overview
org.apache.activemq:activemq-broker is a high performance Apache 2.0 licensed Message Broker and JMS 1.1 implementation.
Affected versions of this package are vulnerable to Improper Authorization in AuthorizationBroker through the temporary-destination write ACL check in AuthorizationBroker.java. An authenticated low-privilege user can publish messages to destinations they are not allowed to write by sending to a temporary composite destination whose physical name is a comma-separated list of real queues. Because the broker treats the composite temporary destination as a temporary destination for ACL evaluation, the per-destination write check is bypassed and messages reach the listed queues without the required write permissions.