← CVE Radar
CVE-2026-112894Pillow: Quadratic-time DoS in PDF save_all (PdfParser.next_object_id)
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.
8.7 HIGHEPSS 0.59%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.7 | HIGH | 4.0GitHub_M (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| 7.5 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Details
- CVE ID
- CVE-2026-112894
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Oct 19, 2026
- Last modified
- 2026-10-27 14:56 UTC
- Weaknesses
- CWE-407 · Inefficient Algorithmic Complexity
Affected Products
As published by the CNA in the CVE record.
python-pillowPillow1 version range
- >= 5.1.0, < 13.0.0