CVE-2026-57967

critical · 9.8

An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and assume ongoing execution of the previously authenticated session. This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0. Users are recommended to upgrade to version 2.57.0, which fixes the issue.

9.8

CVSS

1.5%

EPSS (exploit prob.)

74th

EPSS percentile

2026-09-10

Published

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

Weaknesses

CWE-306

Affected products

Vendor	Product	Affected versions
apache	artemis	>= 1.0.0, < 2.44.0
apache	artemis	>= 2.50.0, < 2.57.0

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/fxfjqrdsnksw5f17zs3yqo864lblgv6y
http://www.openwall.com/lists/oss-security/2026/09/10/5
https://github.com/c0dem4sters/CVE-2026-57967

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-57967