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 (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...

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...

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 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...

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-2026-66781

A flaw was found in the Submariner operator. The Submariner Custom Resource CR, used for configuring network connectivity, stores the IPsec pre-shared key PSK in an unencrypted format. This key, which is critical for securing communication between Kubernetes clusters, can be accessed by...

CVE-2026-66783 Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref

A flaw was found in the submariner-operator component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource CR, to specify an unvalidated image path. This lack of validation...

CVE-2026-66783 Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref

A flaw was found in the submariner-operator component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource CR, to specify an unvalidated image path. This lack of validation...

CVE-2026-66782 Submariner-operator: operator clusterrole grants cluster-wide create/update on all configmaps

A flaw was found in the Submariner operator. This vulnerability allows for the exposure of a long-lived broker service account SA bearer token within the Submariner Custom Resource CR specification. An attacker with access to the cluster's etcd database or through kubectl get commands could obtai...

CVE-2026-66783

A flaw was found in the submariner-operator component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource CR, to specify an unvalidated image path. This lack of validation...

CVE-2026-66781

The Submariner operator for Kubernetes multi-cluster networking stores the IPsec pre-shared key (PSK) in unencrypted (cleartext) format within the Submariner Custom Resource (CR) spec. This key is critical for securing communication between clusters in the mesh. An attacker with local access to t...