CVE-2026-112401
highPillow is a Python imaging library.
Vendor / product: Python — pillow
Pillow is a Python imaging library. From 5.4.0 until 13.0.0, Pillow performs quadratic copying while parsing GIF comments. GifImageFile._seek() repeatedly appends immutable bytes for comment sub-blocks and multiple comment extensions, and frame zero is parsed during Image.open(). An attacker can submit a small-dimension GIF containing many comment extensions to any application that opens the file. This can consume excessive CPU and deny service before the application can inspect the image. 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 21:02
NVD status: Analyzed
Last synced 18 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 ≥5.4.0 <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/68a3fe957d8a4d552e8c69d96066d749f0614c7e
Patch / mitigation: https://github.com/python-pillow/Pillow/security/advisories/GHSA-74r2-7ff9-mjj2
References
- https://github.com/python-pillow/Pillow/commit/68a3fe957d8a4d552e8c69d96066d749f0614c7e 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-74r2-7ff9-mjj2 security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗