CVE-2026-109276 ImageMagick CVE debrief

Who should care

System administrators and security teams responsible for ImageMagick installations should assess exposure and take action to prevent temporary file leaks. This includes reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems.

Why it matters

Defenders should care about CVE-2026-109276 because it can lead to temporary file leaks in ImageMagick, consuming disk space and degrading availability. System administrators and security teams responsible for ImageMagick installations should assess exposure and take action to prevent temporary file leaks. The vulnerability has a CVSS score of 6.9 and is considered medium severity.

• Disk space consumption due to temporary file leaks
• Availability degradation due to temporary file accumulation
• Potential for denial-of-service (DoS) attacks
• Need for verification of affected versions and patch application

Technical summary

The vulnerability is caused by an incomplete cleanup flaw in the JNG decoder of ImageMagick. When processing crafted JNG files, temporary files are not removed, leading to a temporary file leak. This can be exploited by attackers to consume disk space and degrade availability. The affected product context includes ImageMagick versions before 6.9.13-57 and 7.x before 7.1.2-32. Defenders should prioritize patching or upgrading to fixed versions to prevent temporary file leaks. System administrators and security teams responsible for ImageMagick installations should assess exposure and take action.

Defensive priority

Defenders should prioritize patching or upgrading to fixed versions of ImageMagick, specifically 6.9.13-57 or later and 7.1.2-32 or later, to prevent temporary file leaks. System administrators and security teams responsible for ImageMagick installations should assess exposure and take action.

Recommended defensive actions

• Patch or upgrade to ImageMagick version 6.9.13-57 or later
• Patch or upgrade to ImageMagick version 7.1.2-32 or later
• Restrict input to ImageMagick JNG decoder to prevent crafted file processing
• Monitor ImageMagick installations for unusual activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, including affected versions and patch commits. However, there is limited information on exploitation or impact. Defenders should verify the affected versions and apply patches or upgrades to prevent temporary file leaks. The official CVE Program record and NIST NVD detail page provide source-provided CVE metadata and vulnerability assessment. Supplemental sources, including vendor advisories and patch commits, also provide relevant information.

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.