Headline
GHSA-whxr-3p84-rf3c: Apache ActiveMQ: Unchecked buffer length can cause excessive memory allocation
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ.
During unmarshalling of OpenWire commands the size value of buffers was not properly validated which could lead to excessive memory allocation and be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on the availability of the ActiveMQ broker when not using mutual TLS connections. This issue affects Apache ActiveMQ: from 6.0.0 before 6.1.6, from 5.18.0 before 5.18.7, from 5.17.0 before 5.17.7, before 5.16.8. ActiveMQ 5.19.0 is not affected.
Users are recommended to upgrade to version 6.1.6+, 5.19.0+, 5.18.7+, 5.17.7, or 5.16.8 or which fixes the issue.
Existing users may implement mutual TLS to mitigate the risk on affected brokers.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-27533
Apache ActiveMQ: Unchecked buffer length can cause excessive memory allocation
Moderate severity GitHub Reviewed Published May 7, 2025 to the GitHub Advisory Database • Updated May 7, 2025
Package
maven org.apache.activemq:activemq-client (Maven)
Affected versions
< 5.16.8
>= 5.17.0, < 5.17.7
>= 5.18.0, < 5.18.7
>= 6.0.0, < 6.1.6
Patched versions
5.16.8
5.17.7
5.18.7
6.1.6
maven org.apache.activemq:activemq-openwire-legacy (Maven)
< 5.16.8
>= 5.17.0, < 5.17.7
>= 5.18.0, < 5.18.7
>= 6.0.0, < 6.1.6
5.16.8
5.17.7
5.18.7
6.1.6
Published to the GitHub Advisory Database
May 7, 2025