CVE-2026-66785

A flaw was found in Submariner. This vulnerability allows a malicious cluster (spoke) to redirect network traffic from other connected clusters (peer clusters) by publishing a specially crafted network endpoint. The system fails to properly validate the network subnets provided by the malicious cluster, enabling it to declare arbitrary network ranges. Consequently, all network traffic intended for these arbitrary ranges from peer clusters will be rerouted through the attacker's tunnel, potentially leading to unauthorized information disclosure or network disruption.

CVSS v3 2.5 LOW

2.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:63016
https://access.redhat.com/security/cve/CVE-2026-66785
https://bugzilla.redhat.com/show_bug.cgi?id=2507530

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-20 19:16

Updated : 2026-09-03 13:06

NVD link : CVE-2026-66785

Mitre link : CVE-2026-66785

CVE.ORG link : CVE-2026-66785

JSON object : View

Products Affected

No product.

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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