EUVD-2026-27089
GHSA-wg65-39gg-5wfj
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Prometheus monitoring system exposes Azure AD OAuth client secrets in plaintext via its /-/config HTTP API endpoint. Versions prior to 3.5.3 and 3.11.3 incorrectly type the client_secret field as a plain string instead of Prometheus's redacted Secret type, allowing remote unauthenticated attackers to retrieve sensitive Azure credentials from any exposed Prometheus instance configured for Azure AD remote write. …
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RemediationAI
Within 24 hours: Identify all Prometheus instances in your environment and determine which are configured for Azure AD remote write by checking for client_secret fields in /-/config output. Within 7 days: Upgrade all affected Prometheus instances to version 3.5.3 or 3.11.3 (depending on current minor version line), rotate all exposed Azure AD OAuth client secrets in your Azure tenant, and review Azure AD sign-in and audit logs for unauthorized access. …
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