========================================================================== Ubuntu Security Notice USN-8301-1 May 25, 2026
simpleeval vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
SimpleEval could be made to run programs if it received specially crafted
input.
Software Description:
- simpleeval: Python library for evaluating expressions
Details:
Byambadalai Sumiya discovered that SimpleEval did not properly restrict
attribute access and callback handling inside a sandbox. An attacker could
possibly use this issue to execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
python3-simpleeval 1.0.3-1+deb13u1build0.26.04.1
Ubuntu 25.10
python3-simpleeval 1.0.3-1+deb13u1build0.25.10.1
Ubuntu 24.04 LTS
python3-simpleeval 0.9.12-1+deb12u1build0.24.04.1
Ubuntu 22.04 LTS
python3-simpleeval 0.9.11-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 20.04 LTS
python3-simpleeval 0.9.10-1+deb11u1build0.20.04.1
Available with Ubuntu Pro
Ubuntu 18.04 LTS
python-simpleeval 0.9.5-1ubuntu0.1~esm1
Available with Ubuntu Pro
python3-simpleeval 0.9.5-1ubuntu0.1~esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
python-simpleeval 0.8.7-1ubuntu0.1~esm1
Available with Ubuntu Pro
python3-simpleeval 0.8.7-1ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8301-1
CVE-2026-32640
Package Information:
https://launchpad.net/ubuntu/+source/simpleeval/1.0.3-1+deb13u1build0.26.04.1
https://launchpad.net/ubuntu/+source/simpleeval/1.0.3-1+deb13u1build0.25.10.1
https://launchpad.net/ubuntu/+source/simpleeval/0.9.12-1+deb12u1build0.24.04.1
signature.asc
Description: OpenPGP digital signature
