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CVE-2026-40914 Apache Software Foundation CVE debrief

A vulnerability in Apache Artemis allows authenticated STOMP protocol users with consume or send permissions on an address to bypass routing-type restrictions. Specifically, such users can augment the routing-type supported by an address even without holding the createAddress permission, enabling message operations on routing-types that should be rejected. The issue stems from improper authorization checks (CWE-863) where permission to send/consume messages does not properly gate the ability to modify address routing-type behavior. Affected versions include Apache Artemis 2.50.0 through 2.53.0 and Apache ActiveMQ Artemis 2.0.0 through 2.44.0. The vulnerability was published on 2026-05-28 and remains under analysis by NVD. No known exploitation in ransomware campaigns has been reported.

Vendor
Apache Software Foundation
Product
Apache Artemis Stomp Protocol
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-28
Original CVE updated
2026-06-15
Advisory published
2026-05-28
Advisory updated
2026-06-15

Who should care

Organizations running Apache Artemis or Apache ActiveMQ Artemis with STOMP protocol enabled, particularly those with multi-tenant messaging environments or strict address-level access controls. Security teams responsible for messaging middleware authorization policies and operators managing STOMP client permissions.

Technical summary

The vulnerability exists in the STOMP protocol implementation of Apache Artemis where the authorization check for routing-type augmentation is improperly decoupled from the createAddress permission. A user with consume or send permissions can successfully complete message operations that involve routing-types not originally supported by the target address, effectively escalating their capabilities beyond granted permissions. The fix in version 2.54.0 enforces proper authorization validation to prevent this bypass.

Defensive priority

medium

Recommended defensive actions

  • Upgrade Apache Artemis to version 2.54.0 or later to remediate this vulnerability
  • Review STOMP user permissions to ensure principle of least privilege for consume and send operations
  • Audit address configurations to verify routing-type settings match intended security policies
  • Monitor for unauthorized routing-type modifications in STOMP client activity logs
  • Verify createAddress permission assignments align with organizational authorization requirements

Evidence notes

Vulnerability description sourced from official CVE record and NVD entry. CWE-863 (Incorrect Authorization) identified as the weakness type. Affected version ranges and remediation guidance (upgrade to 2.54.0) derived from CVE description. Vendor attribution to Apache based on reference domain evidence with low confidence flag for review.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-40914 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-40914

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-40914 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-40914

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.