Infinite loop in ImageMagick - CVE-2026-55595

Vulnerability identifier: #VU135666

CSH Severity: Medium

CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-55595

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to loop with unreachable exit condition in the connected-components option when processing invalid arguments. A remote attacker can provide invalid arguments to cause a denial of service.

User interaction is required to supply the invalid arguments.

ImageMagick
openEuler
ImageMagick-help
ImageMagick-perl
ImageMagick-devel
ImageMagick-debugsource
ImageMagick-debuginfo
ImageMagick-c++-devel
ImageMagick-c++
ImageMagick

Install security update from vendor's website.

ImageMagick - addressed in versions 6.9.13-51, 7.1.2-26
ImageMagick-help - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-perl - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-devel - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-debugsource - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-debuginfo - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-c++-devel - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick-c++ - addressed in versions 6.9.13.51-1, 7.1.2.26-1
ImageMagick - addressed in versions 6.9.13.51-1, 7.1.2.26-1

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qhmf-7fc4-8q3h

• Multiple vulnerabilities in ImageMagick
• openEuler 24.03 LTS SP3 update for ImageMagick
• openEuler 24.03 LTS SP1 update for ImageMagick
• openEuler 22.03 LTS SP4 update for ImageMagick
• openEuler 20.03 LTS SP4 update for ImageMagick