CVE-2026-66781

Submariner-operator: pprof debug endpoint enabled by default on 0.0.0.0:8082 without authentication

MEDIUM
5.4
CVSS Score
Published: August 18, 2026 at 05:05 PM UTC
Updated: October 19, 2026 at 05:17 PM UTC
1 product affected across 1 vendorAdvanced Cluster Management for Kubernetes

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions2
Vendor states this is fixed in 1787362658 (unaffected)
Vendor states this is fixed in 1787362694 (unaffected)
Vendor states this is fixed in 1787362733 (unaffected)
Vendor states this is fixed in 1787362756 (unaffected)
Vendor states this is fixed in 1787365971 (unaffected)
Vendor states this is fixed in 1787689013 (unaffected)
Vendor states this is fixed in 1788073481 (unaffected)
Vendor states this is fixed in 1788105072 (unaffected)
Vendor states this is fixed in 1790670243 (unaffected)
Vendor states this is fixed in 1790670912 (unaffected)

References (10)

VDB Entryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/security/cve/CVE-2026-66781
Issue Trackingx_refsource_REDHAT
Source: cverecord
https://bugzilla.redhat.com/show_bug.cgi?id=2507526
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60386
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60389
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60390
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60387
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60388
Vendor Advisoryx_refsource_REDHAT
Source: cverecord
https://access.redhat.com/errata/RHSA-2026:60391

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMredhat
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-312CWE-749

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