Submariner-operator: pprof debug endpoint enabled by default on 0.0.0.0:8082 without authentication
Summary
| CVE | CVE-2026-66781 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-18 17:17:00 UTC |
| Updated | 2026-09-03 13:06:00 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 5.4 MEDIUM from [email protected]
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
EPSS: 0.002640000 probability, percentile 0.180810000 (date 2026-09-07)
Problem Types: CWE-749 | CWE-749 Exposed Dangerous Method or Function
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.4 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| 3.1 | CNA | CVSS | 5.4 | MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
CVSS v3.1 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:63016 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60389 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60388 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60387 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60390 | [email protected] | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-66781 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60391 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60386 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-27T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2026-08-18T16:35:00.000Z | Made public. |
Workarounds
CNA: 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.