Memory Allocation with Excessive Size Value Affecting pillow package, versions [,12.3.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-PYTHON-PILLOW-17824465
  • published6 Jul 2026
  • disclosed6 Jul 2026
  • creditx-forwarded-sudo

Introduced: 6 Jul 2026

CVE-2026-54059  (opens in a new tab)
CWE-789  (opens in a new tab)

How to fix?

Upgrade pillow to version 12.3.0 or higher.

Overview

Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via the PcfFontFile._load_bitmaps process. An attacker can cause excessive memory allocation by supplying crafted PCF font data that bypasses decompression bomb checks.

CVSS Base Scores

version 4.0
version 3.1