CVE-2023-40577

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

CVSS 7.5 HIGHEPSS 0.6%CWE-79

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

prometheus · alertmanager

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References

https://github.com/prometheus/alertmanager/security/advisories/GHSA-v86x-5fm3-5p7j https://lists.debian.org/debian-lts-announce/2023/10/msg00011.html