CVE-2026-112400Pillow: GIF seek keeps rejected size after DecompressionBombError, allowing DoS

Descripción

Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow can retain a rejected GIF frame size after a decompression-bomb exception. In GifImageFile._seek, a crafted GIF can leave rejected dimensions stored after Image.DecompressionBombError; if an application catches that exception and continues processing the same image object, later seek or load operations allocate according to those dimensions and can exhaust memory, denying service. This issue is fixed in version 13.0.0.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-65qm-jvmh-6pqg ExploitMitigationPatchVendor Advisory
• https://github.com/python-pillow/Pillow/commit/6faed707cfb760a4cbd726ddc8406f576cf35bf7 Patch
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0 Release Notes