🛡️ CVE-2026-54060 on Ubuntu — pillow

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assembled per-glyph images into a combined bitmap with Image.new("1", (xsize, ysize)) without calling Image._decompression_bomb_check(), allowing a font to trigger excessive allocation during conversion or saving. This issue is fixed in version 12.3.0.

Distribution advisory

This page covers CVE-2026-54060 as tracked by Ubuntu, for the package pillow. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

UBUNTU-CVE-2026-54060 is classified as CWE-789: Memory Allocation with Excessive Size Value. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Affected software

UBUNTU-CVE-2026-54060 is recorded against 2 packages.

pillow
pillow-python2

Timeline and source

Published on 6 July 2026 and last revised on 9 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)
github.com (Report)
github.com (Report)

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-07-06

Updated 2026-08-11

Modified 2026-07-09

Fix URL N/A

Affected Packages

Software	From version	Fixed in
pillow	—	—
pillow-python2	—	—

References

REPORT https://ubuntu.com/security/CVE-2026-54060

REPORT https://www.cve.org/CVERecord?id=CVE-2026-54060

REPORT https://github.com/python-pillow/Pillow/security/advisories/GHSA-5x94-69rx-g8h2

REPORT https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst

REPORT https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d

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