CVE WatchJul 2, 2026

CVE-2026-53916

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. An unauthenticat

CVSS

7.5

High

EPSS

0.8%

p52

KEV

—

Exploit Today

0-100

Published: Jun 30, 2026 · Last modified: Jul 2, 2026 · CWE-789

EPSS · 30d

0.5%EPSS · 30 days0.8%

2026-07-012026-07-16

Technical 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.

Official references

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