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.
Affected products
prometheus: prometheus
References10
- github.com/prometheus/prometheus/security/advisories/GHSA-wg65-… Vendor Advisory
- github.com/prometheus/prometheus/pull/18587 Issue TrackingPatch
- github.com/prometheus/prometheus/pull/18590 Issue TrackingPatch
- github.com/prometheus/prometheus/releases/tag/v3.11.3 Release Notes
- github.com/prometheus/prometheus/releases/tag/v3.5.3 Release Notes
- access.redhat.com/errata/RHSA-2026:25039
- access.redhat.com/errata/RHSA-2026:25245
- access.redhat.com/errata/RHSA-2026:25504
- access.redhat.com/errata/RHSA-2026:34357
- access.redhat.com/errata/RHSA-2026:34359
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 13 November 2026
- CWE
- CWE-200CWE-312CWE-256
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