CVE-2026-42310

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468	Patch
https://github.com/python-pillow/Pillow/pull/9519	Issue Tracking Patch
https://github.com/python-pillow/Pillow/releases/tag/12.2.0	Product Release Notes
https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*

History

12 May 2026, 17:55

Type	Values Removed	Values Added
References	~~() https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468 -~~	() https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468 - Patch
References	~~() https://github.com/python-pillow/Pillow/pull/9519 -~~	() https://github.com/python-pillow/Pillow/pull/9519 - Issue Tracking, Patch
References	~~() https://github.com/python-pillow/Pillow/releases/tag/12.2.0 -~~	() https://github.com/python-pillow/Pillow/releases/tag/12.2.0 - Product, Release Notes
References	~~() https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7 -~~	() https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7 - Patch, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:a:python:pillow::::::::
First Time		Python Python pillow

09 May 2026, 06:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-09 06:16

Updated : 2026-05-12 17:55

NVD link : CVE-2026-42310

Mitre link : CVE-2026-42310

CVE.ORG link : CVE-2026-42310

JSON object : View

Products Affected

python

pillow

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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