cyfenced.com →

[ CVE-2026-112892 · Published 19 Oct 2026 ]

Pillow: MSP RLE decoder expands a tiny file into unbounded memory

CVSS 8.7 EPSS <1%Fix available

[ Description ]Official description

Pillow is a Python imaging library. From 4.1.0 until 13.0.0, Pillow's MSP RLE decoder can expand a small file into an unbounded in-memory buffer. The decoder writes run-length output to BytesIO without limiting expansion to the declared image size. An attacker can supply a crafted MSP image to an application that loads its pixels. This can exhaust memory and deny service even when the declared pixel count passes the decompression-bomb check. This issue is fixed in version 13.0.0.

[ Fixes ]Fixes and patches

  • pillow 13.0.0Fixed version · GitHub Advisories · pip package pillow: upgrade to 13.0.0 or later (affected >= 4.1.0, < 13.0.0)

[ Packages ]Affected open-source packages

[ References ]References