Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint
### 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
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-40577US | medium5.4 | — | ||
Alertmanager handles alerts sent by client applications such as the Prometheus server. An attacker with the permission to perform POST requests on the /api/v1/alerts endpoint could… | ||||
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references
External citations — patches, advisories, analysis.
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