CVE-2026-112894
highPillow is a Python imaging library.
Vendor / product: Python — pillow
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-19 22:17
Modified: 2026-10-27 14:56
NVD status: Analyzed
Last synced 20 hours ago
Verified against the source API 2026-10-28 11:30 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
python / pillow ≥5.1.0 <13.0.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/python-pillow/Pillow/commit/f6a852555f1a1bdff7781abf25f1a3b8bd6ce6cb
Patch / mitigation: https://github.com/python-pillow/Pillow/security/advisories/GHSA-jg86-v3jv-hrpm
Patch / mitigation: https://github.com/python-pillow/Pillow/security/advisories/GHSA-jg86-v3jv-hrpm
References
- https://github.com/python-pillow/Pillow/commit/f6a852555f1a1bdff7781abf25f1a3b8bd6ce6cb security-advisories@github.com
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 security-advisories@github.com
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-jg86-v3jv-hrpm security-advisories@github.com
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-jg86-v3jv-hrpm 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗