CVE-2026-66786

Published: Sep 2, 2026Modified: Sep 5, 2026

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitability: 2.3 / Impact: 6.0

Source: secalert@redhat.com (Secondary)

Description

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.

Related CWEs

CWE-94

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

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References (3)

https://access.redhat.com/errata/RHSA-2026:63016

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2026-66786

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2507531

Source: secalert@redhat.com

Timeline

No history available yet.