CVE-2026-42151

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.
References
Link Resource
https://github.com/prometheus/prometheus/pull/18587 Issue Tracking Patch
https://github.com/prometheus/prometheus/pull/18590 Issue Tracking Patch
https://github.com/prometheus/prometheus/releases/tag/v3.11.3 Release Notes
https://github.com/prometheus/prometheus/releases/tag/v3.5.3 Release Notes
https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:25039
https://access.redhat.com/errata/RHSA-2026:25245
https://access.redhat.com/errata/RHSA-2026:25504
https://access.redhat.com/errata/RHSA-2026:34357
https://access.redhat.com/errata/RHSA-2026:34359
https://access.redhat.com/errata/RHSA-2026:36651
https://access.redhat.com/errata/RHSA-2026:36796
https://access.redhat.com/errata/RHSA-2026:36797
https://access.redhat.com/errata/RHSA-2026:37267
https://access.redhat.com/errata/RHSA-2026:37271
https://access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:40118
https://access.redhat.com/errata/RHSA-2026:40262
https://access.redhat.com/errata/RHSA-2026:40768
https://access.redhat.com/errata/RHSA-2026:40945
https://access.redhat.com/errata/RHSA-2026:40970
https://access.redhat.com/errata/RHSA-2026:40972
https://access.redhat.com/errata/RHSA-2026:40974
https://access.redhat.com/errata/RHSA-2026:41019
https://access.redhat.com/errata/RHSA-2026:41030
https://access.redhat.com/errata/RHSA-2026:41031
https://access.redhat.com/errata/RHSA-2026:41066
https://access.redhat.com/errata/RHSA-2026:42146
https://access.redhat.com/errata/RHSA-2026:42796
https://access.redhat.com/errata/RHSA-2026:42852
https://access.redhat.com/errata/RHSA-2026:43052
https://access.redhat.com/errata/RHSA-2026:44622
https://access.redhat.com/errata/RHSA-2026:47149
https://access.redhat.com/errata/RHSA-2026:47952
https://access.redhat.com/errata/RHSA-2026:50843
https://access.redhat.com/errata/RHSA-2026:50874
https://access.redhat.com/errata/RHSA-2026:53412
https://access.redhat.com/errata/RHSA-2026:53413
https://access.redhat.com/errata/RHSA-2026:53415
https://access.redhat.com/errata/RHSA-2026:53530
https://access.redhat.com/errata/RHSA-2026:54288
https://access.redhat.com/errata/RHSA-2026:54427
https://access.redhat.com/errata/RHSA-2026:56340
https://access.redhat.com/errata/RHSA-2026:57191
https://access.redhat.com/errata/RHSA-2026:60386
https://access.redhat.com/errata/RHSA-2026:60387
https://access.redhat.com/errata/RHSA-2026:60388
https://access.redhat.com/errata/RHSA-2026:60389
https://access.redhat.com/errata/RHSA-2026:60390
https://access.redhat.com/errata/RHSA-2026:60391
https://access.redhat.com/errata/RHSA-2026:60441
https://access.redhat.com/errata/RHSA-2026:60477
https://access.redhat.com/errata/RHSA-2026:63103
https://access.redhat.com/security/cve/CVE-2026-42151
https://bugzilla.redhat.com/show_bug.cgi?id=2466507
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42151.json
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:*
cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-04 19:16

Updated : 2026-09-10 13:20


NVD link : CVE-2026-42151

Mitre link : CVE-2026-42151

CVE.ORG link : CVE-2026-42151


JSON object : View

Products Affected

prometheus

  • prometheus
CWE
CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-312

Cleartext Storage of Sensitive Information

CWE-256

Plaintext Storage of a Password