CVE-2023-40577

Publication date 25 August 2023

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
prometheus-alertmanager	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 0.23.0-4ubuntu0.2+esm1
	20.04 LTS focal	Fixed 0.15.3+ds-3ubuntu1.2
	18.04 LTS bionic	Fixed 0.6.2+ds-3ubuntu0.1+esm1
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

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Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-6935-1
Prometheus Alertmanager vulnerability
31 July 2024