MEDIUM5.4
GHSA-v86x-5fm3-5p7j
Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint
Quick fix
GHSA-v86x-5fm3-5p7j — github.com/prometheus/alertmanager: upgrade to the fixed version with the command below.
go get github.com/prometheus/alertmanager@v0.25.1Details
### Impact
An attacker with the permission to perform POST requests on the /api/v1/alerts endpoint could be able to execute arbitrary JavaScript code on the users of Prometheus Alertmanager.
### Patches
Users can upgrade to Alertmanager v0.2.51.
### Workarounds
Users can setup a reverse proxy in front of the Alertmanager web server to forbid access to the /api/v1/alerts endpoint.
### References
N/A
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/prometheus/alertmanager
Introduced in:
0Fixed in: 0.25.1Fix
go get github.com/prometheus/alertmanager@v0.25.1