CVE-2026-54059

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

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

Vulnerability Description

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

Vulnerability Details

Published Date

July 06, 2026

Last Modified

July 06, 2026

CWE ID

CWE-789

Source

NVD

Vendor

python-pillow

Product

Pillow

External References

https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst
https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d
https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x

CVE-2026-54059

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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