CVE-2026-112894

HighCVSS 7.5/10Last modified Oct 27, 2026

Description

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow takes quadratic time to reserve PDF object identifiers when saving many frames with save_all enabled. PdfParser.next_object_id() repeatedly rebuilds and scans all previously reserved identifiers for every object. An attacker can supply a multi-frame image, including a small APNG with a large declared frame count, to an application that converts it to a multipage PDF. This can consume excessive 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-407

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-2026-112894: High severity, CVSS 7.5 | Vulnix