CVE-2026-112406

HighCVSS 7.5/10Last modified Oct 27, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

VendorProductVersions
python-pillowPillow>= 5.1.0, < 13.0.0

References

Timeline

Published
Oct 19, 2026
Last modified
Oct 27, 2026
NVD status
Analyzed

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CVE-2026-112406: High severity, CVSS 7.5 | Vulnix