CVEvulnerability

CVE-2026-42151

7.5 HIGH Published 2026-05-04 Modified 2026-09-10 Official page ↗
Status
Modified
Published
2026-05-04
Last modified
2026-09-10
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-200, CWE-256, CWE-312

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 configurations

• prometheus prometheus (>= 2.48.0 < 3.5.3) • prometheus prometheus (>= 3.6.0 < 3.11.3)

Related

Weakness · CWE (3)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-256 Plaintext Storage of a Password weakness
  • CWE-312 Cleartext Storage of Sensitive Information weakness

References