CVE-2023-40577 – Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint

https://notcve.org/view.php?id=CVE-2023-40577

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 be able to execute arbitrary JavaScript code on the users of Prometheus Alertmanager. This issue has been fixed in Alertmanager version 0.2.51. Alertmanager gestiona alertas enviadas por aplicaciones cliente como el servidor Prometheus. Un atacante con permiso para realizar peticiones POST en el endpoint "/api/v1/alerts" podría ser capaz de ejecutar código JavaScript arbitrario en los usuarios de Prometheus Alertmanager. • https://github.com/prometheus/alertmanager/security/advisories/GHSA-v86x-5fm3-5p7j https://lists.debian.org/debian-lts-announce/2023/10/msg00011.html https://access.redhat.com/security/cve/CVE-2023-40577 https://bugzilla.redhat.com/show_bug.cgi?id=2235479 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •