CVE-2026-57967
A remote attacker can hijack an existing session in Apache Artemis and ActiveMQ Artemis by sending a specially crafted packet. This lets them take over the session without authentication. The flaw is present in many recent versions and is critical.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Apache Artemis versions 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis versions 1.0.0 through 2.44.0.
Real-world impact
An attacker could take control of a user's session, execute commands, and access data as if they were the legitimate user.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network, requires no authentication, and gives full compromise of confidentiality, integrity, and availability.
What to do about it
- 01Upgrade to Apache Artemis 2.57.0 or later.
NVD-referenced vendor advisory
Timeline
- Sep 10, 2026 · 4d agoPublishedDisclosed and added to the National Vulnerability Database.
- Sep 10, 2026 · 3d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.