CVE-2026-42310

MEDIUM EPSS 2.6%
Published May 9, 20261mo ago · Modified Jun 17, 20262w ago
5.1 CVSS 4.0
Medium
Find Similar
Published May 9, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.1
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-835

Affected Products 1

VendorProductVersionRange
pythonpillow*≥4.2.0  –  <12.2.0

References 4

  • github.com https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468
    Patch
  • github.com https://github.com/python-pillow/Pillow/pull/9519
    Issue TrackingPatch
  • github.com https://github.com/python-pillow/Pillow/releases/tag/12.2.0
    ProductRelease Notes
  • github.com https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7
    PatchVendor Advisory

Remediation

  • github.com https://github.com/python-pillow/Pillow/commit/3bf614e4b8615d0ce1d5039efaf6db447fe7c468
    Patch
  • github.com https://github.com/python-pillow/Pillow/pull/9519
    Issue TrackingPatch
  • github.com https://github.com/python-pillow/Pillow/security/advisories/GHSA-r73j-pqj5-w3x7
    PatchVendor Advisory