Vulnerability-Lookup

CVE-2026-66780 (GCVE-0-2026-66780)

Vulnerability from cvelistv5 – Published: 2026-08-18 17:32 – Updated: 2026-09-03 04:41

Title

Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity

Summary

A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 18:44 UTC

CWE

CWE-532 - Insertion of Sensitive Information into Log File

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:63016	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-66780	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2507524	issue-trackingx_refsource_REDHAT

Impacted products

3 products

Vendor	Product	Version
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.17	Unaffected: 1788105072 , < * (rpm) cpe:/a:redhat:acm:2.17::el9
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.17	Unaffected: 1788073481 , < * (rpm) cpe:/a:redhat:acm:2.17::el9
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2	cpe:/a:redhat:acm:2

Date Public

2026-08-18 16:35

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-66780

Vulnerability from fkie_nvd - Published: 2026-08-18 18:19 - Updated: 2026-09-03 13:06

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/errata/RHSA-2026:63016
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-66780
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2507524

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-3XMH-PHWC-5F4G

Vulnerability from github – Published: 2026-08-18 18:32 – Updated: 2026-09-03 15:32

Details

A flaw was found in the submariner-operator component. The submariner-k8s-broker-cluster Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.

Severity

9.9 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-66780"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284",
      "CWE-532"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-18T18:19:23Z",
    "severity": "CRITICAL"
  },
  "details": "A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters\u0027 endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.",
  "id": "GHSA-3xmh-phwc-5f4g",
  "modified": "2026-09-03T15:32:02Z",
  "published": "2026-08-18T18:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66780"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60386"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60387"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60388"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60389"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60390"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:60391"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:63016"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-66780"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507524"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

RHSA-2026:60386

Vulnerability from csaf_redhat - Published: 2026-08-26 20:08 - Updated: 2026-09-14 12:20

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.17.1 security update

Severity

Important

Scope

62 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:60387

Vulnerability from csaf_redhat - Published: 2026-08-26 20:10 - Updated: 2026-09-14 12:20

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.11.11 security update

Severity

Important

Scope

55 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:60388

Vulnerability from csaf_redhat - Published: 2026-08-26 20:11 - Updated: 2026-09-14 12:20

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.14.4 security update

Severity

Important

Scope

60 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:60389

Vulnerability from csaf_redhat - Published: 2026-08-26 20:11 - Updated: 2026-09-14 11:59

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.15.6 security update

Severity

Important

Scope

40 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:60390

Vulnerability from csaf_redhat - Published: 2026-08-26 20:11 - Updated: 2026-09-14 11:59

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.13.11 security update

Severity

Important

Scope

56 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:60391

Vulnerability from csaf_redhat - Published: 2026-08-26 20:11 - Updated: 2026-09-14 11:59

Summary

Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.16.4 security update

Severity

Important

Scope

41 vulnerabilities in this advisory.

Open the full advisory

RHSA-2026:63016

Vulnerability from csaf_redhat - Published: 2026-09-03 04:36 - Updated: 2026-09-14 12:20

Summary

Red Hat Security Advisory: Submariner v0.24 security fixes and container updates

Severity

Important

Scope

13 vulnerabilities in this advisory, including CVE-2026-66780.

CVE-2026-66780

6.5 (Medium)


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

Fixed: 8 products Known not affected: 25 products

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

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-66780 (GCVE-0-2026-66780)

Tags

Sightings

Nomenclature