---
id: "CVE-2026-116152"
kind: "vulnerability"
aliases: ["CVE-2026-116152"]
title: "ImageMagick: crafted MAT files leak memory in the decoder"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["image-processing", "imagemagick", "package", "self-hosted"]
not_affected_if: ["no-mat-input", "patched-version"]
published_at: "2026-10-25T14:16:53+00:00"
first_seen_at: "2026-10-25T14:41:22+00:00"
updated_at: "2026-10-25T14:42:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116152", "first_seen_at": "2026-10-25T14:41:22+00:00"}]
---

# ImageMagick: crafted MAT files leak memory in the decoder

ImageMagick before 7.1.2-33 fails to free memory in an error path of its MAT image decoder. Repeatedly feeding it crafted MAT files gradually consumes process memory, which can degrade or crash a service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `magick -version` and compare the version to `7.1.2-33`.
- Check whether the service accepts MAT files from untrusted sources.

## Fix

- Upgrade ImageMagick to `7.1.2-33` or later.

## Timeline

- 2026-10-25T14:41:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116152

## From the sources

ImageMagick before 7.1.2-33 contains a memory leak vulnerability in the MAT decoder that fails to release allocated memory in a specific error path. Attackers can supply crafted MAT files that trigger this error path repeatedly, causing small memory leaks that gradually consume process memory.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_