What is CVE-2026-53917?

CVE-2026-53917 is a high-severity vulnerability in Apache Software Foundation Activemq, classified under CWE-789. CVSS score: 7.5/10. Published 2026-06-30.

How severe is CVE-2026-53917?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Software Foundation Activemq

CVE-2026-53917

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker. An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a l…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Software Foundation Activemq — versions 0, 6.0.0
Apache Software Foundation Activemq All — versions 0, 6.0.0
Apache Software Foundation Activemq Broker — versions 0, 6.0.0
Apache Software Foundation Activemq Client — versions 0, 6.0.0

Weakness classification (CWE)

CWE-789

References

security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-53917?: CVE-2026-53917 is a high-severity vulnerability in Apache Software Foundation Activemq, classified under CWE-789. CVSS score: 7.5/10. Published 2026-06-30.
How severe is CVE-2026-53917?: High severity. CVSS v3 base score is 7.5 out of 10.