CVE-2026-42151 (GCVE-0-2026-42151)

Vulnerability from cvelistv5 – Published: 2026-05-04 18:12 – Updated: 2026-06-30 12:06
VLAI
Title
Prometheus Azure AD remote write OAuth client secret exposed via config API
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-312 - Cleartext Storage of Sensitive Information
  • CWE-256 - Plaintext Storage of a Password
Assigner
References
Impacted products
Vendor Product Version
prometheus prometheus Affected: < 3.5.3
Affected: >= 3.6.0, < 3.11.3
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Custom Metric Autoscaler operator for Red Hat Openshift     cpe:/a:redhat:openshift_custom_metrics_autoscaler:2
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Red Hat File Integrity Operator     cpe:/a:redhat:openshift_file_integrity_operator:1
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Red Hat Logging Subsystem for Red Hat OpenShift     cpe:/a:redhat:logging:6
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Red Hat Network Observability Operator     cpe:/a:redhat:network_observ_optr:1
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Red Hat OpenShift Lightspeed     cpe:/a:redhat:openshift_lightspeed
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
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Red Hat Red Hat Ceph Storage 5     cpe:/a:redhat:ceph_storage:5
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Red Hat Red Hat Ceph Storage 6     cpe:/a:redhat:ceph_storage:6
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Red Hat Red Hat Ceph Storage 7     cpe:/a:redhat:ceph_storage:7
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Red Hat Red Hat Ceph Storage 8     cpe:/a:redhat:ceph_storage:8
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Red Hat Red Hat Ceph Storage 9     cpe:/a:redhat:ceph_storage:9
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Red Hat Red Hat Edge Manager 1     cpe:/a:redhat:edge_manager:1
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat OpenShift distributed tracing 3     cpe:/a:redhat:openshift_distributed_tracing:3
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Red Hat Red Hat OpenShift GitOps     cpe:/a:redhat:openshift_gitops:1
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Red Hat Red Hat OpenStack Platform 18.0     cpe:/a:redhat:openstack:18.0
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Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
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Red Hat Red Hat Trusted Artifact Signer     cpe:/a:redhat:trusted_artifact_signer:1
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Red Hat Multicluster Global Hub     cpe:/a:redhat:multicluster_globalhub
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Red Hat OpenShift Service Mesh 2     cpe:/a:redhat:service_mesh:2
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Red Hat OpenShift Service Mesh 3     cpe:/a:redhat:service_mesh:3
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      "cveMetadata": "{\"cveId\": \"CVE-2026-42151\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-04T19:55:09.255Z\", \"dateReserved\": \"2026-04-24T17:15:21.835Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-04T18:12:16.917Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.