GHSA-v86x-5fm3-5p7j: Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint

1. GitHub Advisory Database
2. GitHub Reviewed
3. GHSA-v86x-5fm3-5p7j

Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint

High severity GitHub Reviewed Published Aug 23, 2023 in prometheus/alertmanager • Updated Aug 23, 2023

Package

gomod github.com/prometheus/alertmanager (Go)

Affected versions

<= 0.25.0

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

References

• GHSA-v86x-5fm3-5p7j

Published to the GitHub Advisory Database

Aug 23, 2023

Last updated

Aug 23, 2023