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1 vulnerability by psd-tools

CVE-2026-27809 (GCVE-0-2026-27809)

Vulnerability from cvelistv5 – Published: 2026-02-25 23:57 – Updated: 2026-02-26 15:17
VLAI?
Title
psd-tools: Compression module has unguarded zlib decompression, missing dimension validation, and hardening gaps
Summary
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.
CWE
  • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
  • CWE-789 - Memory Allocation with Excessive Size Value
  • CWE-617 - Reachable Assertion
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-755 - Improper Handling of Exceptional Conditions
  • CWE-704 - Incorrect Type Conversion or Cast
Assigner
Impacted products
Vendor Product Version
psd-tools psd-tools Affected: < 1.12.2
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Show details on NVD website

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