CVE-2026-66780Disclosure

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-532

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://securityonline.info/redhat-vulnerability-cve-2026-66780/

Full discourse1 post

Daily CyberSecurity@Daily_CyberSec47d
Disclosure
A critical Red Hat vulnerability, CVE-2026-66780 (CVSS 9.9), enables a MITM attack across a cluster mesh. Two more critical flaws disclosed. #RedHat #CVE202666780 #MITM #Kubernetes #Keycloak #InfoSec https://securityonline.info/redhat-vulnerability-cve-2026-66780/
Post summary
The tweet announces a critical Red Hat vulnerability (CVE-2026-66780) with a CVSS of 9.9 that permits MITM attacks across a cluster mesh in Kubernetes environments, but it does not provide any PoC, exploit code, or patch information.
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