USN-8231-1: Dynaconf vulnerability

Publication date

6 May 2026

Overview

Dynaconf could be made to execute arbitrary code.


Packages

Details

It was discovered that Dynaconf was incorrectly handling template evaluation
in its string resolvers. A remote attacker could possibly use this issue
to execute arbitrary code.

It was discovered that Dynaconf was incorrectly handling template evaluation
in its string resolvers. A remote attacker could possibly use this issue
to execute arbitrary code.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
26.04 LTS resolute python3-dynaconf –  3.2.12-1ubuntu0.1~esm1  
25.10 questing python3-dynaconf –  3.1.7-2ubuntu0.25.10.1
24.04 LTS noble python3-dynaconf –  3.1.7-2ubuntu0.24.04.1
22.04 LTS jammy python3-dynaconf –  3.1.7-1ubuntu0.1~esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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