CVE-2026-53916
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
Description
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Stomp: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
INFO
Published Date :
June 30, 2026, 9:49 a.m.
Last Modified :
June 30, 2026, 9:49 a.m.
Remotely Exploit :
No
Source :
apache
Solution
- Upgrade Apache ActiveMQ to version 6.2.7 or 5.19.8.
- Apply vendor patches if available for your version.
- Monitor heap usage after upgrade.
- Validate STOMP connection handling.
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