Loop with Unreachable Exit Condition ('Infinite Loop') Affecting pillow package, versions <12.1.1-2ubuntu1.2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-UBUNTU2604-PILLOW-16655442
  • published9 Jun 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

CVE-2026-42310  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 pillow to version 12.1.1-2ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pillow package and not the pillow package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

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 Base Scores

version 3.1