CVE-2026-56376: ImageMagick - Heap Use-After-Free in Meta Coder

Published Jun 23, 2026
·
Updated

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.

Affected Software

7 affected componentsFixes available
ImageMagick ImageMagick<7.1.2-15, <6.9.13-40
ImageMagick ImageMagick<6.9.13-40
ImageMagick ImageMagick>=7.0.0-0<7.1.2-15
debian/imagemagick<8:6.9.11.60+dfsg-1.6+deb12u12
8:6.9.11.60+dfsg-1.6+deb12u12
debian/imagemagick<8:7.1.1.43+dfsg1-1+deb13u11
8:7.1.1.43+dfsg1-1+deb13u11
debian/imagemagick<8:7.1.2.15+dfsg1-1
8:7.1.2.15+dfsg1-1
debian/imagemagick<=8:6.9.11.60+dfsg-1.6+deb12u11
8:6.9.11.60+dfsg-1.6+deb12u158:7.1.1.43+dfsg1-1+deb13u128:7.1.1.43+dfsg1-1+deb13u148:7.1.2.34+dfsg1-18:7.1.2.35+dfsg1-2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/imagemagick to a version that resolves this vulnerability.

    Fixed in 8:6.9.11.60+dfsg-1.6+deb12u12
  2. Upgrade

    Upgrade debian/imagemagick to a version that resolves this vulnerability.

    Fixed in 8:7.1.1.43+dfsg1-1+deb13u11
  3. Upgrade

    Upgrade debian/imagemagick to a version that resolves this vulnerability.

    Fixed in 8:7.1.2.15+dfsg1-1
  4. Upgrade

    Upgrade debian/imagemagick to a version that resolves this vulnerability.

    Fixed in 8:6.9.11.60+dfsg-1.6+deb12u15Fixed in 8:7.1.1.43+dfsg1-1+deb13u12Fixed in 8:7.1.1.43+dfsg1-1+deb13u14Fixed in 8:7.1.2.34+dfsg1-1Fixed in 8:7.1.2.35+dfsg1-2

Event History

Jun 23, 2026
CVE Published
via MITRE·12:13 PM
Data Sourced
via MITRE·12:13 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·01:16 PM
DescriptionSeverityWeaknessAffected Software
Oct 30, 2026
Data Sourced
via OSV·09:49 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-56376?

The severity of CVE-2026-56376 is rated low with a score of 3.7.

2

How do I fix CVE-2026-56376?

To fix CVE-2026-56376, upgrade ImageMagick to versions 7.1.2-15 or 6.9.13-40 and above.

3

What impact does CVE-2026-56376 have on my system?

CVE-2026-56376 can lead to a denial of service due to a heap use-after-free vulnerability triggered by specially crafted image files.

4

What versions of ImageMagick are affected by CVE-2026-56376?

CVE-2026-56376 affects ImageMagick versions prior to 7.1.2-15 and 6.9.13-40.

5

Can CVE-2026-56376 be exploited remotely?

Yes, CVE-2026-56376 can be exploited remotely by attackers through the processing of specially crafted image files.

Company

Resources

Contact

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