CVE-2026-27809

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.

Score
CVSS 3.1 9.1 Critical
Status
Analyzed - security-advisories@github.com
Published
2026-02-26
Last modified
2026-02-26
Weaknesses
CWE-190, CWE-409, CWE-617, CWE-704, CWE-755, CWE-789

Affected products

References

 
 
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