CVE-2026-53916

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/07hjsj88hqgsb7vvg6ttsj56ts9vjs5n	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/29/13	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:activemq::::::::
	cpe:2.3:a:apache:activemq::::::::

History

02 Jul 2026, 18:42

Type	Values Removed	Values Added
References	~~() https://lists.apache.org/thread/07hjsj88hqgsb7vvg6ttsj56ts9vjs5n -~~	() https://lists.apache.org/thread/07hjsj88hqgsb7vvg6ttsj56ts9vjs5n - Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2026/06/29/13 -~~	() http://www.openwall.com/lists/oss-security/2026/06/29/13 - Third Party Advisory
First Time		Apache activemq Apache
CPE		cpe:2.3:a:apache:activemq::::::::

30 Jun 2026, 17:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

30 Jun 2026, 12:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/06/29/13 -

30 Jun 2026, 11:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-30 11:16

Updated : 2026-07-02 18:42

NVD link : CVE-2026-53916

Mitre link : CVE-2026-53916

CVE.ORG link : CVE-2026-53916

JSON object : View

Products Affected

apache

activemq

CWE

CWE-789

Memory Allocation with Excessive Size Value

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