Vulnerability record · CVE-2026-53916 · published 30 June 2026

CVE-2026-53916: Apache activemq vulnerability

Apache · Activemq

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.

7.5 CVSS 3.1 High EPSS 0.74% · top 47.2% CWE-789 · CWE-789

7.5CVSS 3.1 base score

0.74%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

2 Jul 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Activemq Apache

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-53916), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.