Alertmanager <=0.2.51 Arbitrary JS Exec via /api/v1/alerts
CVE-2023-40577 Published on August 25, 2023
Alertmanager UI is vulnerable to stored XSS via the /api/v1/alerts endpoint
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.
Vulnerability Analysis
CVE-2023-40577 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2023-40577 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2023-40577
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Affected Versions
prometheus alertmanager Version <= 0.25.0 is affected by CVE-2023-40577Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.