23 Oct 2026 15:48:27 UTC
psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry
cve-program · CVE-2026-59991 · Published
CVE-2026-59991
psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry
CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-59991
Publishedpsd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to 1.17.4, PSDImage.composite() and PSDImage.numpy() allocated output buffers from attacker-controlled PSD header geometry, including width, height, channels, depth, and per-layer rectangles, before validating those values against the available file data. A tiny crafted PSD could therefore cause multi-gigabyte memory allocation, and PSDImage.composite() could return a black image with only a warning instead of raising an exception. Services that composite untrusted PSD files could be terminated by out-of-memory handling. This issue is fixed in version 1.17.4.
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