Ubuntu USN · USN-8231-1

Dynaconf vulnerability

Published: Wed, 06 May 2026 09:06

CVE-2026-33154

Summary

Dynaconf could be made to execute arbitrary code.

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.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu jammy

python-dynaconf→3.1.7-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.1.7-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-dynaconf=3.1.7-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-dynaconf→3.1.7-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.1.7-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-dynaconf=3.1.7-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Ubuntu noble

python-dynaconf→3.1.7-2ubuntu0.24.04.1apt_upgrade
Standard apt upgrade. Install 3.1.7-2ubuntu0.24.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python-dynaconf
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python3-dynaconf→3.1.7-2ubuntu0.24.04.1apt_upgrade
Standard apt upgrade. Install 3.1.7-2ubuntu0.24.04.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-dynaconf
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu questing

python-dynaconf→3.1.7-2ubuntu0.25.10.1apt_upgrade
Standard apt upgrade. Install 3.1.7-2ubuntu0.25.10.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python-dynaconf
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
python3-dynaconf→3.1.7-2ubuntu0.25.10.1apt_upgrade
Standard apt upgrade. Install 3.1.7-2ubuntu0.25.10.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-dynaconf
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

python-dynaconf→3.2.12-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.2.12-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python-dynaconf=3.2.12-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
python3-dynaconf→3.2.12-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.2.12-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y python3-dynaconf=3.2.12-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

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