ImageMagick – Heap Use-After-Free in Meta Coder_CVE-2026-56376

6.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Description

ImageMagick before 7.1.2-15 and 6.9.13-40 contains a heap use-after-free in the meta coder: when memory allocation fails, a single byte is written to a stale pointer. Remote attackers can trigger it by processing specially crafted image files, causing a denial of service.

Basic Information

ID CVE-2026-56376

Source VulnCheck

Published Jun 23, 2026 at 12:13

Affected Product

Vendor ImageMagick

Product ImageMagick

Affected Versions ImageMagick ImageMagick 0
ImageMagick ImageMagick 0

CWE Classification

CWE-416

References

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    "lastseen": "",
    "description": "ImageMagick before 7.1.2-15 and 6.9.13-40 contains a heap use-after-free in the meta coder: when memory allocation fails, a single byte is written to a stale pointer. Remote attackers can trigger it by processing specially crafted image files, causing a denial of service.",
    "published": "2026-06-23T12:13:04.795Z",
    "modified": "2026-06-23T12:13:04.795Z",
    "type": "cve",
    "title": "ImageMagick - Heap Use-After-Free in Meta Coder",
    "source": "VulnCheck",
    "references": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2gq3-ww97-wfjm\nhttps://www.vulncheck.com/advisories/imagemagick-heap-use-after-free-in-meta-coder",
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    "cvss": {
        "score": 6.3,
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        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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        "cvssV3": {
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    "product": "ImageMagick",
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