CVE-2026-106572: ImageMagick: Stack Overflown CALS decoder due to missing depth check.

Published Oct 7, 2026
·
Updated

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 missing recursion-depth check in the CALS decoder allows a crafted CALS image to exhaust the call stack and terminate the process. This issue is fixed in versions 7.1.2-30 and 6.9.13-55.

Affected Software

7 affected componentsFixes available
ImageMagick ImageMagick<7.1.2-30, <6.9.13-55
ImageMagick ImageMagick<6.9.13-55
ImageMagick ImageMagick>=7.0.0-0<7.1.2-30
debian/imagemagick<8:6.9.11.60+dfsg-1.6+deb12u14
8:6.9.11.60+dfsg-1.6+deb12u14
debian/imagemagick<8:7.1.1.43+dfsg1-1+deb13u13
8:7.1.1.43+dfsg1-1+deb13u13
debian/imagemagick<8:7.1.2.31+dfsg1-1
8:7.1.2.31+dfsg1-1
debian/imagemagick<=8:6.9.11.60+dfsg-1.6+deb12u11, <=8:7.1.1.43+dfsg1-1+deb13u12
8:6.9.11.60+dfsg-1.6+deb12u158:7.1.1.43+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+deb12u14
  2. Upgrade

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

    Fixed in 8:7.1.1.43+dfsg1-1+deb13u13
  3. Upgrade

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

    Fixed in 8:7.1.2.31+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+deb13u14Fixed in 8:7.1.2.34+dfsg1-1Fixed in 8:7.1.2.35+dfsg1-2
  5. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 7.1.2-30
  6. Upgrade

    Upgrade ImageMagick to a version that resolves this vulnerability.

    Fixed in 6.9.13-55

Event History

Oct 7, 2026
CVE Published
via MITRE·03:33 PM
Data Sourced
via MITRE·03:33 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·04:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·04:17 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which deployments are exposed to this issue?

Deployments using ImageMagick versions earlier than 7.1.2-30 or 6.9.13-55 are affected when they process CALS images. The issue can be triggered remotely without authentication or user interaction if an attacker can cause the deployment to decode a crafted CALS file.

2

What is the practical impact of successful exploitation?

A crafted CALS image can exhaust the decoder's call stack and terminate the ImageMagick process. The reported impact is denial of service; no confidentiality or integrity impact is specified.

3

What should be done if an immediate upgrade is not possible?

The provided information does not specify a workaround. Until upgrading to 7.1.2-30 or 6.9.13-55, avoid processing untrusted CALS images where possible.

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