CVE-2026-75880 Apache CVE debrief

Who should care

Defenders and administrators responsible for Apache Artemis or Apache ActiveMQ Artemis deployments should assess exposure and prioritize upgrading to version 2.57.0 to mitigate this denial-of-service vulnerability.

Why it matters

CVE-2026-75880 is a denial-of-service vulnerability in Apache Artemis and Apache ActiveMQ Artemis that requires verification of exposure and mitigation through upgrading to version 2.57.0.

• Potential denial-of-service due to excessive evaluation during message delivery attempts
• Need to verify affected versions in use and assess exposure in specific environments
• Priority on upgrading to version 2.57.0 to mitigate vulnerability

Technical summary

An authenticated client can attach a consumer with a crafted wildcard selector, causing excessive evaluation during message delivery attempts in Apache Artemis versions 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis versions 1.0.0 through 2.44.0. This issue requires verification of exposure and mitigation through upgrading to version 2.57.0 to prevent potential denial-of-service due to excessive evaluation during message delivery attempts. Defenders should assess exposure in their environments, particularly where Apache Artemis or Apache ActiveMQ Artemis are used, and prioritize upgrading to version 2.57.0.

Defensive priority

Defenders should prioritize upgrading to version 2.57.0 to mitigate this denial-of-service vulnerability. They should assess exposure in their environments, particularly where Apache Artemis or Apache ActiveMQ Artemis are used.

Recommended defensive actions

• Upgrade to version 2.57.0
• Assess exposure in environments using Apache Artemis or Apache ActiveMQ Artemis
• Verify affected versions in use
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, affected versions, and recommended actions. However, the scope of affected deployments and potential impact on specific environments require further verification.

Sources and 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.