CVE-2026-53916

highCVSS 7.5covered by 1 sourcefirst seen 2026-06-30

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.

⚡ Watch CVE-2026-53916

Get an email if CVE-2026-53916 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.

Exploitation outlook

Low exploitation risk0.80% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-53916: Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ …nvd · 2026-06-30

External references

NVD record for CVE-2026-53916

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-53916 status](https://www.csirts.com/badge/CVE-2026-53916)](https://www.csirts.com/cve/CVE-2026-53916)