All vulnerabilities
GHSA-8xmr-6q99-c4x8

ImageMagick: Undefined Behavior in the INFO, JSON and YAML encoders when writing it in a compressed format

ImageMagickLibraries & packages
Open in ThreatlineRecord JSON
CVSS
2.2Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in7.1.2-32Also 6.9.13-57GitHub
Published27 Sep 2026Updated 27 Sep 2026GitHub

What fixes it

  • 7.1.2-32ImageMagick, c/c++GitHub
  • 6.9.13-57ImageMagick, c/c++GitHub

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

When writing an image using the INFO, JSON and YAML encoders in a compressed format an internal method expects a pointer of a different type that will result in a SIGABRT or SIGSEGV.

Text from GitHub Advisory Database

Affected versions 2

  • ImageMagick, c/c++< 7.1.2-32GitHub
  • ImageMagick, c/c++< 6.9.13-57GitHub