CVE-2026-42310

UNKNOWN 0.0

Pillow: PDF Parsing Trailer Infinite Loop (DoS)

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-835
Vendor	python-pillow
Product	pillow
Published	May 9, 2026

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Affected Versions

python-pillow / Pillow

>= 4.2.0, < 12.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7 github.com: https://github.com/python-pillow/Pillow/pull/9519 github.com: https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468 github.com: https://github.com/python-pillow/Pillow/releases/tag/12.2.0