Is there a public exploit for CVE-2026-54059?

No public exploit for CVE-2026-54059 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-54059?

CVE-2026-54059 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.41%.

What does CVE-2026-54059 affect?

CVE-2026-54059 affects python-pillow Pillow.

7.5 High

Pillow is a Python imaging library.

CVE-2026-54059

Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py loadbitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image.decompressionbombcheck(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 0.41% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 6 July 2026
Last updated: 25 October 2026
Affected: python-pillow · Pillow
Weakness: CWE-789
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

At the source

References

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