CVE-2026-27809
Description
psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.12.2, when a PSD file contains malformed RLE-compressed image data (e.g. a literal run that extends past the expected row size), decode_rle() raises ValueError which propagated all the way to the user, crashing psd.composite() and psd-tools export. decompress() already had a fallback that replaces failed channels with black pixels when result is None, but it never triggered because the ValueError from decode_rle() was not caught. The fix in version 1.12.2 wraps the decode_rle() call in a try/except so the existing fallback handles the error gracefully.
How to fix
- psd-tools_project psd-tools1.12.2 or later
- psd-tools1.12.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| psd-tools_project psd-tools | v < 1.12.2 | 1.12.2 |
| psd-toolsPyPI | v < 1.12.2 | 1.12.2 |
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