JLSEC-2026-1048 Medium 6.3

ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 contains an integer overflow in the PSB ...

JLSEC Published: Jul 30, 2026
Modified: Jul 30, 2026
Severity: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Packages: ImageMagick_jll < 7.1.0+0, >= 7.1.2001+0, < 7.1.2023+0
Upstream: CVE-2026-56367 GHSA-rg39-4fm5-hrp2 EUVD-2026-38173

ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 contains an integer overflow in the PSB (PSD v2) RLE decoding path (ReadPSDChannelRLE in coders/psd.c) that causes a heap out-of-bounds read on 32-bit builds. Processing a crafted PSB file can lead to information disclosure or a crash.

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-273h-m46v-96q4
https://github.com/advisories/GHSA-rg39-4fm5-hrp2
https://nvd.nist.gov/vuln/detail/CVE-2026-56367
https://www.vulncheck.com/advisories/imagemagick-heap-out-of-bounds-read-in-psb-rle-decoding