CVE-2026-111813 Apache Software Foundation CVE debrief

Who should care

Administrators and users of Apache Traffic Server, particularly those with versions 8.0.1 through 8.1.11, 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, and 10.2.0, should be aware of the vulnerability and take necessary actions to secure their deployments. This includes verifying affected deployments, reviewing official advisories, and planning updates or mitigations.

Why it matters

Apache Traffic Server's magick plugin vulnerability allows unauthenticated clients to control ImageMagick convert arguments, potentially leading to security issues. Administrators and users of affected versions should upgrade to fixed versions and monitor for potential exploitation attempts.

• Potential for arbitrary code execution requires verification from official sources
• Possible impact on confidentiality, integrity, and availability
• Need to verify affected versions and upgrade to fixed versions
• Monitoring for exploitation attempts is recommended

Technical summary

Apache Traffic Server's experimental magick plugin passes client query strings unfiltered to ImageMagick convert in the default configuration, allowing unauthenticated clients to control ImageMagick convert arguments. This issue affects Apache Traffic Server: from 8.0.1 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. The vulnerability could lead to potential security issues, including arbitrary code execution, and impact confidentiality, integrity, and availability. Administrators and users of affected versions should upgrade to fixed versions and monitor for potential exploitation attempts.

Defensive priority

Upgrade to fixed versions

Recommended defensive actions

• Upgrade Apache Traffic Server to version 9.2.16, 10.1.5, or 10.2.1
• Review and adjust the configuration of the magick plugin
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and source item provide details on the vulnerability in Apache Traffic Server's magick plugin. Affected deployments should be verified for existence in managed environments. Official advisories and CVE records should be reviewed to validate affected scope, severity, and vendor guidance. Compensating controls should be considered for exposed systems while remediation is scheduled and verified. Monitoring, detection, and logs should be checked for exposed assets that need extra review.

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.