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[USN-8690-1] Pillow vulnerability

Posted on 01 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8690-1
September 01, 2026

pillow vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Pillow could be made to crash or expose sensitive information if it
processed a specially crafted image file.

Software Description:
- pillow: Python Imaging Library

Details:

It was discovered that Pillow did not properly manage memory when
processing certain image files. An attacker could possibly use this issue
to cause a denial of service or read sensitive data.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
python3-pil 12.1.1-2ubuntu1.3
python3-pil.imagetk 12.1.1-2ubuntu1.3

Ubuntu 24.04 LTS
python3-pil 10.2.0-1ubuntu1.3
python3-pil.imagetk 10.2.0-1ubuntu1.3

Ubuntu 22.04 LTS
python3-pil 9.0.1-1ubuntu0.5
python3-pil.imagetk 9.0.1-1ubuntu0.5

Ubuntu 20.04 LTS
python3-pil 7.0.0-4ubuntu0.9+esm1
Available with Ubuntu Pro
python3-pil.imagetk 7.0.0-4ubuntu0.9+esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8690-1
CVE-2026-59198

Package Information:
https://launchpad.net/ubuntu/+source/pillow/12.1.1-2ubuntu1.3
https://launchpad.net/ubuntu/+source/pillow/10.2.0-1ubuntu1.3
https://launchpad.net/ubuntu/+source/pillow/9.0.1-1ubuntu0.5

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