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.
History

Sat, 05 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 03 Sep 2026 05:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.17::el9
References

Wed, 02 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Title submariner: submariner: ipsec.conf stanza injection via remote-supplied CableName and Subnets Submariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subnets
First Time appeared Redhat
Redhat acm
CPEs cpe:/a:redhat:acm:2
Vendors & Products Redhat
Redhat acm
References

Mon, 24 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Submariner
Submariner submariner
Vendors & Products Submariner
Submariner submariner

Sat, 22 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
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.
Title submariner: submariner: ipsec.conf stanza injection via remote-supplied CableName and Subnets
Weaknesses CWE-94
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

threat_severity

Moderate


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-09-02T17:57:19.436Z

Updated: 2026-09-05T01:01:30.464Z

Reserved: 2026-07-27T17:51:24.885Z

Link: CVE-2026-66786

cve-icon Vulnrichment

Updated: 2026-09-05T01:01:26.612Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-02T18:21:10.517

Modified: 2026-09-05T01:16:49.053

Link: CVE-2026-66786

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-21T16:43:00Z

Links: CVE-2026-66786 - Bugzilla