CVE-2026-42151

7.5 HIGH
Published: May 04, 2026 Modified: May 11, 2026
View on NVD

Description

Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the client_secret field in the Azure AD remote write OAuth configuration (storage/remote/azuread) was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving the configuration via the /-/config HTTP API endpoint. Because the field was a plain string, the Azure OAuth client secret was exposed in plaintext to any user or process with access to that endpoint. This issue has been patched in versions 3.5.3 and 3.11.3.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/prometheus/prometheus/pull/18587
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/prometheus/prometheus/pull/18590
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/prometheus/prometheus/releases/tag/v3.11.3
Source: security-advisories@github.com
Release Notes
https://github.com/prometheus/prometheus/releases/tag/v3.5.3
Source: security-advisories@github.com
Release Notes
https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj
Source: security-advisories@github.com
Vendor Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.2%
16th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

prometheus