CVE-2026-53916

HIGH

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec

Title source: cna
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0080
EPSS Percentile 52.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-789
Status published
Products (7)
apache/activemq < 5.19.8
Apache Software Foundation/Apache ActiveMQ < 5.19.8
Apache Software Foundation/Apache ActiveMQ 6.0.0 - 6.2.7
Apache Software Foundation/Apache ActiveMQ All < 5.19.8
Apache Software Foundation/Apache ActiveMQ All 6.0.0 - 6.2.7
Apache Software Foundation/Apache ActiveMQ Stomp < 5.19.8
Apache Software Foundation/Apache ActiveMQ Stomp 6.0.0 - 6.2.7
Published Jun 30, 2026
Tracked Since Jun 30, 2026