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.
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History
Thu, 26 Feb 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | psd-tools: Compression module has unguarded zlib decompression, missing dimension validation, and hardening gaps | |
| Weaknesses | CWE-190 CWE-409 CWE-617 CWE-704 CWE-755 CWE-789 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-02-25T23:57:00.760Z
Updated: 2026-02-25T23:57:00.760Z
Reserved: 2026-02-24T02:31:33.267Z
Link: CVE-2026-27809
No data.
Status : Received
Published: 2026-02-26T00:16:26.233
Modified: 2026-02-26T00:16:26.233
Link: CVE-2026-27809
No data.