USN-8870-1: OpenStack Aodh and Watcher vulnerability

Publication date

5 October 2026

Overview

OpenStack Aodh and Watcher could allow unintended access to network services.


Packages

  • aodh - OpenStack Telemetry (Ceilometer) Alarming
  • watcher - OpenStack Cloud Optimization as a Service

Details

Chen YuXiang discovered that OpenStack Aodh did not correctly enforce
project scoping in its alarm list API and that the OpenStack Watcher
webhook trigger endpoint did not apply authorization. An attacker could
possibly use this issue to access sensitive alarm metadata or trigger
unauthorized action plans.

Chen YuXiang discovered that OpenStack Aodh did not correctly enforce
project scoping in its alarm list API and that the OpenStack Watcher
webhook trigger endpoint did not apply authorization. An attacker could
possibly use this issue to access sensitive alarm metadata or trigger
unauthorized action plans.

Update instructions

After a standard system update you need to restart aodh and watcher to 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-aodh –  1:22.0.0-0ubuntu1.1
python3-watcher –  2:16.0.0-0ubuntu1+esm1  
24.04 LTS noble python3-aodh –  1:18.0.0-0ubuntu1.1
python3-watcher –  2:12.0.0-0ubuntu1.3+esm1  
22.04 LTS jammy python3-aodh –  1:14.1.0-0ubuntu1.1
python3-watcher –  2:8.0.0-0ubuntu1.2+esm1  
20.04 LTS focal python3-aodh –  10.0.0-0ubuntu0.20.04.1+esm1  
python3-watcher –  1:4.0.0-0ubuntu0.20.04.1+esm1  

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