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High severity7.5NVD Advisory· Published Jun 30, 2026· Updated Jul 2, 2026

CVE-2026-53916

CVE-2026-53916

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.

Affected products

4
  • Apache/Activemq2 versions
    cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*range: <5.19.8
    • (no CPE)range: <5.19.8, >=6.0.0 <6.2.7
  • Apache/ActiveMQ Stompllm-fuzzy
    Range: <5.19.8, >=6.0.0 <6.2.7
  • osv-coords
    pkg:bitnami/activemq
    Range: < 5.19.8

Patches

Vulnerability mechanics

References

2

News mentions

2