Pillow: PDF Parsing Trailer Infinite Loop (DoS)_CVE-2026-42310

5.1 / 10

MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Description

Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.

Basic Information

ID CVE-2026-42310

Source GitHub_M

Published May 9, 2026 at 04:10

Affected Product

Vendor python-pillow

Product Pillow

Version >= 4.2.0, < 12.2.0

Affected Versions python-pillow Pillow >= 4.2.0, < 12.2.0

CWE Classification

CWE-835

References

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    "published": "2026-05-09T04:10:48.395Z",
    "modified": "2026-05-09T04:10:48.395Z",
    "type": "cve",
    "title": "Pillow: PDF Parsing Trailer Infinite Loop (DoS)",
    "source": "GitHub_M",
    "references": "https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7\nhttps://github.com/python-pillow/Pillow/pull/9519\nhttps://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468\nhttps://github.com/python-pillow/Pillow/releases/tag/12.2.0",
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