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.
History

Mon, 02 Mar 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Psd-tools Project
Psd-tools Project psd-tools
CPEs cpe:2.3:a:psd-tools_project:psd-tools:*:*:*:*:*:*:*:*
Vendors & Products Psd-tools Project
Psd-tools Project psd-tools
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}


Fri, 27 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 26 Feb 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Psd-tools
Psd-tools psd-tools
Vendors & Products Psd-tools
Psd-tools psd-tools

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
References
Metrics cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-02-25T23:57:00.760Z

Updated: 2026-02-26T15:17:34.807Z

Reserved: 2026-02-24T02:31:33.267Z

Link: CVE-2026-27809

cve-icon Vulnrichment

Updated: 2026-02-26T15:17:22.108Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-26T00:16:26.233

Modified: 2026-03-02T18:55:10.073

Link: CVE-2026-27809

cve-icon Redhat

No data.