CVE-2026-57967: Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
Vulnerability summary
CVE-2026-57967 is a critical (CVSS 9.8) vulnerability in apache software foundation apache activemq artemis. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.7% of scored vulnerabilities.
Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4Timeline
- 10-09-2026PublishedVulnerability first disclosed.
- 09-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.47%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
Increase +0.40 pp
From 1.07% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Apache software foundation2 products
- apache activemq artemis≥ 1.0.0, ≤ 2.44.0
- apache artemis≥ 2.50.0, ≤ 2.56.0
Apache1 product
- artemis≥ 1.0.0, < 2.44.0 | ≥ 2.50.0, < 2.57.0
2 vendors · 3 products