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VulniPulse
Advisory severityMedium5.4Vendor: HighRed Hat Linux

Medium [CVE-2026-66781] pprof debug endpoint enabled by default on 0.0.0.0:8082 without authentication

This medium-severity Red Hat Linux advisory covers CVE-2026-66781 affecting Red Hat Advanced Cluster Management for Kubernetes 2.11, Red Hat Advanced Cluster Management for Kubernetes 2.13, Red Hat Advanced Cluster Management for Kubernetes 2.14.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-66781 Source published Source updated

VulniPulse record published Record updated

Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format.

This key, which is critical for securing communication between Kubernetes clusters, can be accessed by unauthorized parties. Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure.

As Custom Resources are not encrypted by default in etcd on OpenShift, and the PSK is identical across all clusters in a mesh, its disclosure via `kubectl get submariner -o yaml` or through must-gather bundles allows an attacker with appropriate permissions to passively decrypt traffic between any two connected clusters.

Red Hat severity: Important — CVSS 5.4 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L). Weakness: CWE-749.

Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2.11; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Management for Kubernetes 2.16; Red Hat Advanced Cluster Management for Kubernetes 2.17; Red Hat Advanced Cluster Management for Kubernetes 2.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Fixed versions
  • rhacm2/submariner-addon-rhel9:1787689013
  • rhacm2/submariner-addon-rhel9:1787365971
  • rhacm2/submariner-addon-rhel9:1787362756
  • rhacm2/submariner-addon-rhel9:1787362733
  • rhacm2/submariner-addon-rhel9:1787362694
  • rhacm2/submariner-addon-rhel9:1787362658
  • rhacm2/subctl-rhel9:1788105072
  • rhacm2/submariner-rhel9-operator:1788073481
  • RHSA-2026:60387
  • RHSA-2026:60390
  • RHSA-2026:60388
  • RHSA-2026:60389
  • RHSA-2026:60391
  • RHSA-2026:60386
  • RHSA-2026:63016

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • To mitigate the risk of IPsec pre-shared key (PSK) disclosure, implement strict Kubernetes Role-Based Access Control (RBAC) policies to limit access to Submariner Custom Resources. Ensure that only authorized administrators and systems are granted permissions to view `submariner` Custom Resources within their namespaces. Additionally, exercise caution when collecting and storing diagnostic data, such as must-gather bundles, and when managing GitOps repositories, as these may inadvertently expose the cleartext PSK.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

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