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CVE-2023-40577

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Date: August 24, 2023

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.

Language: Go

Severity Score

Related Resources (6)

https://security-tracker.debian.org/tracker/CVE-2023-40577
https://github.com/prometheus/alertmanager/security/advisories/GHSA-v86x-5fm3-5p7j
https://github.com/prometheus/alertmanager
https://nvd.nist.gov/vuln/detail/CVE-2023-40577
https://lists.debian.org/debian-lts-announce/2023/10/msg00011.html
https://www.mend.io/vulnerability-database/CVE-2023-40577

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade to version github.com/prometheus/alertmanager - v0.25.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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