Prometheus Azure AD remote write OAuth client secret exposed via config API
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42151) concerns the inadvertent exposure of the OAuth client secret for Prometheus Azure AD remote write through a configuration API in certain Microsoft products, including Azure Linux and CBL Mariner versions 2.0 and 3.0. The exposure of this secret could potentially allow unauthorized access to OAuth-protected resources. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information). No official patch or mitigation details are provided in the available data, and no CVSS score has been assigned.
Potential Impact
Exposure of the OAuth client secret may allow unauthorized parties to impersonate the client in OAuth flows, potentially leading to unauthorized access to Azure AD resources or data accessible via Prometheus remote write. However, no known exploits have been reported in the wild, and the exact impact scope is not detailed in the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Until an official fix is available, restrict access to the configuration API to trusted administrators only and monitor for unauthorized access attempts. Avoid exposing sensitive configuration endpoints publicly.
Prometheus Azure AD remote write OAuth client secret exposed via config API
Description
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42151) concerns the inadvertent exposure of the OAuth client secret for Prometheus Azure AD remote write through a configuration API in certain Microsoft products, including Azure Linux and CBL Mariner versions 2.0 and 3.0. The exposure of this secret could potentially allow unauthorized access to OAuth-protected resources. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information). No official patch or mitigation details are provided in the available data, and no CVSS score has been assigned.
Potential Impact
Exposure of the OAuth client secret may allow unauthorized parties to impersonate the client in OAuth flows, potentially leading to unauthorized access to Azure AD resources or data accessible via Prometheus remote write. However, no known exploits have been reported in the wild, and the exact impact scope is not detailed in the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Until an official fix is available, restrict access to the configuration API to trusted administrators only and monitor for unauthorized access attempts. Avoid exposing sensitive configuration endpoints publicly.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-42151
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a20982fe29bf47b50ebdf1c
Added to database: 6/3/2026, 9:10:07 PM
Last enriched: 6/3/2026, 9:13:12 PM
Last updated: 6/3/2026, 11:29:39 PM
Views: 2
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