CVE-2026-57967
Last modified
CVE-2026-57967 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Artemis | >= 1.0.0, < 2.44.0 |
| Apache | Artemis | >= 2.50.0, < 2.57.0 |
References
- https://lists.apache.org/thread/fxfjqrdsnksw5f17zs3yqo864lblgv6yMailing List, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2026/09/10/5Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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