Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.5 security update

Red Hat multicluster engine for Kubernetes v2.11 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base...

Important: Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.16.3 security update

Red Hat Advanced Cluster Management for Kubernetes v2.16 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS...

CVE-2026-18544 Portieris is vulnerable to Image Policy Bypass via Unvalidated ownerReference

IBM Portieris 0.5.0 through 0.14.2 could allow a remote authenticated attacker to bypass image policy enforcement due to improper authorization of pod owner references...

GHSA-6VCH-Q96H-7GC3 vulnerabilities

Vulnerabilities for packages: rancher-support-bundle-kit, milvus, cilium-cli, kine, external-dns, hubble, cilium, reports-server, loki, kube-conformance, dapr, commercial-grafana, kubernetes, kots, multicluster-controlplane, minio, multicluster-controlplane-fips, cert-manager, kyverno...

CVE-2026-66794

A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy...

CVE-2026-50149

Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuratio...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.18.53 bug fix and security update

Red Hat OpenShift Container Platform release 4.18.53 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.18. Red Hat Product Security has rated this update as having a...

CVE-2026-50149 Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled

Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuratio...

CVE-2026-50149

Contour (Kubernetes ingress controller using Envoy proxy) versions 1.23.0 through 1.33.4 contain a JWT verification bypass . When an HTTPProxy resource is configured with both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour accepts the incompatibl...

CVE-2026-50149 Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled

Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuratio...

EUVD-2026-62414

Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an HTTPProxy is configured with incompatible combination of both .spec.virtualhost.tls.enableFallbackCertificate: true and .spec.virtualhost.jwtProviders, Contour does not reject the configuratio...

PYSEC-2026-3685 mcp-server-kubernetes argument injection can expose Kubernetes cluster credentials

MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools kubectlget, kubectldescribe, kubectldelete that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can...

mcp-server-kubernetes argument injection can expose Kubernetes cluster credentials

MCP Server Kubernetes before 3.9.0 contains an argument injection vulnerability in structured tools kubectlget, kubectldescribe, kubectldelete that allows attackers to bypass the assertNoDangerousFlags security check by supplying resourceType and name parameters with leading dashes. Attackers can...

BIT-CONSUL-2026-8715 Vault Secrets Operator vulnerable to arbitrary file read and credential exfiltration via AppRole secretIDPath

Vault Secrets Operator 1.3.0 up to 1.4.1 is vulnerable to an arbitrary file read and credential exfiltration issue in the AppRole authentication configuration that may allow a tenant with limited Kubernetes RBAC permissions to read files from the operator pod's filesystem and transmit their...

CVE-2026-73500

A flaw was found in etcd, a distributed key-value store. A remote attacker can exploit this by opening numerous TCP connections to an etcd TLS listener without completing the TLS handshake. This action causes the tlsListener.acceptLoop to spawn an unbounded number of goroutines, which consume...

traefik -- Multiple vulnerabilities

The traefik project releases a new version addressing multiple vulnerabilities: GHSA-5w68-77r2-r64c Complete authentication bypass in the digestAuth middleware GHSA-g55h-rg46-x9c5 TLS option confusion in multi-host routers can bypass mTLS for protected hosts GHSA-j994-9gqj-9hwq Same-host Ingress...

CVE-2026-66780

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...

CVE-2026-66780 Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity

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...

CVE-2026-66780 Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity

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...

CVE-2026-66780

Submariner-operator contains a flaw where the submariner-k8s-broker-cluster Role, assigned to joined clusters, holds excessive permissions. A compromised cluster can overwrite other clusters' endpoint information, redirecting inter-cluster tunnel traffic and enabling a Man-in-the-Middle (MITM) at...