Loop with Unreachable Exit Condition ('Infinite Loop') Affecting pillow package, versions <12.2.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-PILLOW-16638712
  • published11 May 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 Debian:unstable pillow to version 12.2.0-1 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 Debian. See How to fix? for Debian:unstable 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