CVE-2026-66781
Submariner-operator: submariner-operator: ipsec psk stored cleartext in submariner cr spec
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.
INFO
Published Date :
Aug. 18, 2026, 5:17 p.m.
Last Modified :
Aug. 20, 2026, 1:08 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-66781
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Submariner to a version that encrypts PSK.
- Review and rotate existing IPsec pre-shared keys.
- Ensure proper access controls for Submariner CRs.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-66781.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-66781 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2507526 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-66781 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-66781
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-66781 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-66781 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 18, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-66781', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-18T19:21:35.955137Z'} -
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:acm:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2', 'packageName': 'rhacm2/subctl-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2', 'packageName': 'rhacm2/submariner-addon-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2', 'packageName': 'rhacm2/submariner-operator-bundle', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:acm:2'], 'vendor': 'Red Hat', 'product': 'Red Hat Advanced Cluster Management for Kubernetes 2', 'packageName': 'rhacm2/submariner-rhel9-operator', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] Added 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. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Added CWE CWE-312 Added Reference https://access.redhat.com/security/cve/CVE-2026-66781 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2507526