CVE-2026-66788
CVE-2026-66788: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityLow3.7
Low [CVE-2026-66788] Dockerfile build stages use end-of-life Fedora 40 referenced by mutable tag
CVE-2026-66788Source published Source updated
A flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerability where the destination namespace for resource injection is derived from an attacker-controlled label or annotation on the broker object. This allows the attacker to inject unauthorized EndpointSlices and ServiceImports into any namespace on peer clusters, including critical system namespaces like kube-system and openshift-*. This could lead to privilege escalation or other forms of system compromise within the cluster. Important: This flaw in Red Hat Advanced Cluster Management for Kubernetes allows a compromised spoke cluster to inject EndpointSlices and ServiceImports into arbitrary namespaces on peer clusters, including critical system namespaces. The `lighthouse-agent`…
- Affected products in this advisory
- Red Hat Advanced Cluster Management for Kubernetes 2.17
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- rhacm2/lighthouse-agent-rhel9:1788023916
- rhacm2/lighthouse-coredns-rhel9:1788023940
- rhacm2/subctl-rhel9:1788105072
- rhacm2/submariner-rhel9-operator:1788073481
1 more entries in the full advisory.
- Mitigation guidance
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Android app · Google Play
Monitor future Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.