psd-tools: psd-tools is a Python package for working with Adobe Photoshop PSD files
CVE-2026-59991 is fixed in psd-tools on 1 platform by DEBIAN-CVE-2026-59991 (version 1.17.4+dfsg.1-1), released September 24, 2026. It is not reported as exploited. Patch Radar priority: High.
psd-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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| psd-tools · Debian 14 | 1.17.4+dfsg.1-1 | DEBIAN-CVE-2026-59991 | Sep 24, 2026 |
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