A flaw was found in the lighthouse component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability stems from insufficient validation of advertised IP addresses within EndpointSlice objects. A compromised spoke cluster can exploit this by creating EndpointSlices with attacker-controlled IP addresses, causing other clusters' lighthouse DNS to redirect legitimate service traffic to malicious endpoints. This enables a remote attacker to conduct transparent Man-in-the-Middle (MITM) attacks on cross-cluster service communications, potentially leading to unauthorized information disclosure and data manipulation.
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History
Fri, 21 Aug 2026 13:30:00 +0000
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Redhat advanced Cluster Management For Kubernetes
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Redhat advanced Cluster Management For Kubernetes
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threat_severity
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Thu, 20 Aug 2026 19:30:00 +0000
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| Description | A flaw was found in the lighthouse component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability stems from insufficient validation of advertised IP addresses within EndpointSlice objects. A compromised spoke cluster can exploit this by creating EndpointSlices with attacker-controlled IP addresses, causing other clusters' lighthouse DNS to redirect legitimate service traffic to malicious endpoints. This enables a remote attacker to conduct transparent Man-in-the-Middle (MITM) attacks on cross-cluster service communications, potentially leading to unauthorized information disclosure and data manipulation. | |
| Title | Lighthouse: lighthouse: cross-cluster dns spoofing via unvalidated endpointslice and serviceimport ips | |
| First Time appeared |
Redhat
Redhat acm |
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| Weaknesses | CWE-345 | |
| CPEs | cpe:/a:redhat:acm:2 | |
| Vendors & Products |
Redhat
Redhat acm |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-20T18:52:19.463Z
Reserved: 2026-07-27T17:51:24.885Z
Link: CVE-2026-66787
Updated: 2026-08-20T18:52:14.761Z
Status : Received
Published: 2026-08-20T19:16:58.637
Modified: 2026-08-20T19:16:58.637
Link: CVE-2026-66787
OpenCVE Enrichment
Updated: 2026-08-21T13:00:58Z