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/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

30 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:47952 -

29 Jul 2026, 13:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:47149 -

27 Jul 2026, 13:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:44622 -

23 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:43052 -

22 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:42796 -
  • () https://access.redhat.com/errata/RHSA-2026:42852 -

21 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40768 -
  • () https://access.redhat.com/errata/RHSA-2026:42146 -

17 Jul 2026, 13:18

Type Values Removed Values Added
References
  • () 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-2026:41019 -
  • () https://access.redhat.com/errata/RHSA-2026:41030 -
  • () https://access.redhat.com/errata/RHSA-2026:41031 -
  • () https://access.redhat.com/errata/RHSA-2026:41066 -

16 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:40118 -
  • () https://access.redhat.com/errata/RHSA-2026:40262 -
  • () https://access.redhat.com/errata/RHSA-2026:40974 -

10 Jul 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37267 -
  • () https://access.redhat.com/errata/RHSA-2026:37272 -

09 Jul 2026, 13:17

Type Values Removed Values Added
References
  • () 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-2026:37271 -

02 Jul 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:34357 -
  • () https://access.redhat.com/errata/RHSA-2026:34359 -

30 Jun 2026, 03:19

Type Values Removed Values Added
References
  • () 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/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 -
CWE CWE-256

11 May 2026, 17:22

Type Values Removed Values Added
First Time Prometheus prometheus
Prometheus
CPE cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:*
References () https://github.com/prometheus/prometheus/pull/18587 - () https://github.com/prometheus/prometheus/pull/18587 - Issue Tracking, Patch
References () https://github.com/prometheus/prometheus/pull/18590 - () https://github.com/prometheus/prometheus/pull/18590 - Issue Tracking, Patch
References () https://github.com/prometheus/prometheus/releases/tag/v3.11.3 - () https://github.com/prometheus/prometheus/releases/tag/v3.11.3 - Release Notes
References () https://github.com/prometheus/prometheus/releases/tag/v3.5.3 - () https://github.com/prometheus/prometheus/releases/tag/v3.5.3 - Release Notes
References () https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj - () https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj - Vendor Advisory

04 May 2026, 19:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-05-04 19:16

Updated : 2026-07-31 13:18


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