Information disclosure in prometheus - CVE-2026-42151

Vulnerability identifier: #VU128367

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-42151

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to exposure of sensitive information in the /-/config HTTP API endpoint when serving the Azure AD remote write OAuth configuration. A remote attacker can access the endpoint to disclose sensitive information.

Only deployments using Azure AD remote write with OAuth authentication are affected.

prometheus
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Manager Client Tools for SLE Micro
SUSE Linux Enterprise Micro
SUSE Package Hub 15
Basesystem Module
openSUSE Leap
golang-github-prometheus-node_exporter
golang-github-prometheus-node_exporter-debuginfo
golang-github-prometheus-prometheus-debuginfo
golang-github-prometheus-prometheus
release-notes-susemanager-proxy
release-notes-susemanager
Red Hat OpenShift Container Platform

Install security update from vendor's website.

prometheus - addressed in versions 3.5.3, 3.11.3
golang-github-prometheus-node_exporter - update to 1.10.2-150100.3.42.1
golang-github-prometheus-node_exporter-debuginfo - update to 1.10.2-150100.3.42.1
golang-github-prometheus-prometheus-debuginfo - update to 3.5.3-150100.4.34.1
golang-github-prometheus-prometheus - update to 3.5.3-150100.4.34.1
release-notes-susemanager-proxy - update to 4.3.18-150400.3.110.2
release-notes-susemanager - update to 4.3.18-150400.3.154.2
Red Hat OpenShift Container Platform - update to 4.22.6

• https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj

• Multiple vulnerabilities in prometheus
• SUSE update for Maintenance update for Multi-Linux Manager 4.3 Release Notes Release Notes
• SUSE update for golang-github-prometheus-prometheus
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.22