CVE-2026-112406

Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle

Description

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0.

Scores

Faiblesses (CWE)

• CWE-835

Avis

• GHSA-f2g6-542v-9j58 — Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle

Références européennes

• ENISA EUVD · EUVD-2026-104648
• GCVE · GCVE-0-2026-112406

Configurations affectées (CPE NVD)

• cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* ≥ 5.1.0 < 13.0.0

Produits affectés

Références

• https://github.com/python-pillow/Pillow/security/advisories/GHSA-f2g6-542v-9j58
• https://github.com/python-pillow/Pillow/commit/b3ebf20c694f2f12537a629c30229a1d5a53f777
• https://github.com/python-pillow/Pillow/releases/tag/13.0.0

Sources