Information disclosure in Prometheus
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 S…
Vulnerability class: Information Disclosure
EPSS: 0.000 (1.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Prometheus — versions < 3.5.3, >= 3.6.0, < 3.11.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-42151?
- CVE-2026-42151 is a high-severity vulnerability in Prometheus, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-05-04.
- How severe is CVE-2026-42151?
- High severity. CVSS v3 base score is 7.5 out of 10.