CVE-2026-53916 — Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache ActiveMQ	affected 0 before 5.19.8; affected 6.0.0 before 6.2.7
Apache Software Foundation / Apache ActiveMQ All	affected 0 before 5.19.8; affected 6.0.0 before 6.2.7
Apache Software Foundation / Apache ActiveMQ Stomp	affected 0 before 5.19.8; affected 6.0.0 before 6.2.7

CWE

CWE-789

References

https://lists.apache.org/thread/07hjsj88hqgsb7vvg6ttsj56ts9vjs5n

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/06/29/13

CISA-ADP

No English description supplied.

No references supplied.