CVE-2026-105400 ImageMagick CVE debrief

Who should care

Defenders responsible for ImageMagick installations and systems processing magick scripts should assess exposure and prioritize verification and remediation. This includes ImageMagick administrators, security teams, and operators who manage systems that use ImageMagick. They should verify versions, restrict access to untrusted scripts, and monitor system resources to prevent potential denial of service and system instability.

Why it matters

Defenders should care about CVE-2026-105400 because it allows attackers to cause denial of service by leaking file descriptors through crafted magick scripts. ImageMagick administrators and security teams should assess exposure, verify versions, and restrict access to untrusted scripts to prevent potential resource exhaustion and system instability.

• Denial of service due to resource exhaustion
• Potential system crashes or instability
• Increased risk of resource starvation

Technical summary

ImageMagick before 7.1.2-31 contains a resource leak vulnerability that allows attackers to leave file pointers open by supplying a crafted magick script. This vulnerability can lead to denial of service and potential system instability. The vulnerability is caused by a flaw in the way ImageMagick handles magick scripts, allowing attackers to leak file descriptors. Defenders should prioritize verifying ImageMagick versions and restricting access to untrusted magick scripts to prevent potential resource exhaustion and system instability.

Defensive priority

Defenders should prioritize verifying ImageMagick versions and restricting access to untrusted magick scripts.

Recommended defensive actions

• Verify ImageMagick versions and upgrade to 7.1.2-31 or later
• Restrict access to untrusted magick scripts
• Monitor system resources for potential denial of service
• 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 Program record and NVD vulnerability detail provide official information about the vulnerability. The source item and supplemental sources offer additional context. The vulnerability has been reported in ImageMagick before version 7.1.2-31. The CVE record was published on 2026-10-08T14:10:24.032Z and has not been modified since then. The NVD vulnerability detail page provides additional information about the vulnerability, including its CVSS score and severity.

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.