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Back to active CVEs
Critical · CVSS 9.8CVE-2026-57967

Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachmentCVE-2026-57967

Answer in brief

CVE-2026-57967 records a Critical severity (CVSS 9.8) vulnerability in Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache ActiveMQ Artemis (generic), Apache Software Foundation/Apache ActiveMQ Artemis (generic), Apache Software Foundation/Apache Artemis (generic), Apache Software Foundation/Apache Artemis (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Oct 9, 2026Source checked Oct 25, 2026First seen by HOL Sep 10, 2026Material review Oct 9, 2026
Upstream Advisory

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-306
Source
CVE List V5
Source checked
Oct 25, 2026
References
3 linked sources
Open source record

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
7 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache ActiveMQ Artemis (generic), Apache Software Foundation/Apache ActiveMQ Artemis (generic), Apache Software Foundation/Apache Artemis (generic), Apache Software Foundation/Apache Artemis (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:apache:artemis:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache ActiveMQ Artemisgeneric1.0.0Not reported
Apache Software Foundation/Apache ActiveMQ Artemisgeneric>=1.0.0 <=2.44.0Not reported
Apache Software Foundation/Apache Artemisgeneric2.50.0Not reported
Apache Software Foundation/Apache Artemisgeneric>=2.50.0 <=2.56.0Not reported
Apache Software Foundation/org.apache.activemq:artemis-servergeneric>=1.0.0 <=2.44.0Not reported
Apache Software Foundation/org.apache.artemis:artemis-servergeneric>=2.50.0 <=2.56.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache ActiveMQ Artemis, Apache Software Foundation/Apache ActiveMQ Artemis, Apache Software Foundation/Apache Artemis.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 10, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencelists.apache.org
  • Source referenceopenwall.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.