CVE-2026-112405

Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0

Description

Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage to be merged as a narrower multiband image. A crafted IPTC file can reach this path when an application opens and loads it, or a caller can invoke Image.merge() directly with such a first band. This causes a native process crash. This issue is fixed in version 13.0.0.

Scores

Faiblesses (CWE)

• CWE-476

Avis

• GHSA-cp9v-662q-vvx9 — Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0
• PYSEC-2026-4333 — Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band,

Références européennes

• ENISA EUVD · EUVD-2026-104646
• GCVE · GCVE-0-2026-112405

Configurations affectées (CPE NVD)

• cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* ≥ 12.0.0 < 13.0.0

Produits affectés

Références

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-cp9v-662q-vvx9
• https://github.com/python-pillow/Pillow/commit/b6ee66e8b2c2c0932bdf65f963268d9f2927ef86
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0

Sources