CVEvulnerability

CVE-2026-54059

7.5 HIGH Published 2026-07-06 Modified 2026-10-25 Official page ↗

Status: Analyzed
Published: 2026-07-06
Last modified: 2026-10-25
Assigner: [email protected]
CVSS 3.1 ([email protected]): 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses: CWE-789

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.

Affected configurations

• python pillow (< 12.3.0)

Weakness · CWE (1)

CWE-789 Memory Allocation with Excessive Size Value weakness

References

https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst Release Notes
https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d Patch
https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x Exploit, Vendor Advisory
https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x Exploit, Vendor Advisory

CVE-2026-54059

Description

Affected configurations

Related

Weakness · CWE (1)

References