CVE-2026-66786

A flaw was found in submariner. In cert-auth mode, the connection configuration is built using free-form strings from the Custom Resource Definition (CRD) without proper validation. A malicious cluster can exploit this by publishing a CableName that includes newlines and ipsec.conf directives. This allows an attacker to inject arbitrary configuration parameters or execute commands through leftupdown hooks, leading to remote code execution as root on the gateway node.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:63016
https://access.redhat.com/security/cve/CVE-2026-66786
https://bugzilla.redhat.com/show_bug.cgi?id=2507531

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-02 18:21

Updated : 2026-09-05 01:16

NVD link : CVE-2026-66786

Mitre link : CVE-2026-66786

CVE.ORG link : CVE-2026-66786

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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