EUVD-2026-108290

OpenBao from 2.3.0 before 2.6.3 contains an incorrect authorization vulnerability in its ACL policy cache that allows tokens to reference policies from arbitrary namespaces using specially crafted policy names. Attackers holding such tokens can gain capabilities of cached policies in other...

CVE-2026-112778

Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service...

CVE-2026-112778 Traefik before 2.11.46, 3.6.17, and 3.7.1 Cross-Namespace Resource Reference via Kubernetes Annotations

Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service...

EUVD-2026-104584

Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service...

CVE-2026-112778

Traefik versions before 2.11.46 , 3.x before 3.6.17 , and 3.7.0 are vulnerable to a Cross-Namespace Resource Reference in the Kubernetes Ingress provider. The root cause is a lack of namespace validation for Ingress and Service annotations. This allows an attacker with permissions to create or up...

CVE-2026-112778 Traefik before 2.11.46, 3.6.17, and 3.7.1 Cross-Namespace Resource Reference via Kubernetes Annotations

Traefik before 2.11.46, 3.x before 3.6.17, and 3.7.0 lack namespace validation for Ingress and Service annotations in the Kubernetes Ingress provider, allowing references to Middlewares, ServersTransports, and TLSOptions in other namespaces. Attackers able to create or update Ingress or Service...

CVE-2026-89140

The Temporal Server contains a vulnerability where internal completion callbacks are not bound to their specific namespaces. This allows an authenticated caller with write permissions in one namespace to manipulate the Scheduler V2 schedule state in a different namespace. The flaw exists because ...

CVE-2026-89140 Temporal Server internal completion callbacks are not bound to their namespace, allowing cross-namespace changes to Scheduler V2 schedule state

Temporal Server does not bind internal completion callbacks to the namespace that attached them, which allows an authenticated caller with write permission in one namespace to alter Scheduler V2 schedule state in another namespace. The callback address temporal://internal is reserved for callback...

CVE-2026-89140 Temporal Server internal completion callbacks are not bound to their namespace, allowing cross-namespace changes to Scheduler V2 schedule state

Temporal Server does not bind internal completion callbacks to the namespace that attached them, which allows an authenticated caller with write permission in one namespace to alter Scheduler V2 schedule state in another namespace. The callback address temporal://internal is reserved for callback...

Security Bulletin: Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

Summary Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability...

CVE-2026-105820 Vault ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

Vault's ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability...

CVE-2026-105820

The Vault ACL policy cache is vulnerable to a path traversal flaw (CWE-22) when policy names contain specific traversal constructs. This allows a token with a specially crafted policy name to bypass namespace boundaries and utilize the capabilities of policies defined in other namespaces, includi...

Vault Enterprise ACL Policy Cache Vulnerable to Cross-Namespace Policy Resolution

Summary Vault’s ACL policy cache allowed namespace traversal when policy names contained path traversal constructs. This may allow a token assigned specially crafted policy names to use the capabilities of policies defined in other namespaces, including the root namespace. This vulnerability...

CVE-2026-53718

A flaw was found in Envoy Gateway. An attacker could exploit a vulnerability in how HTTPRoute handles custom backend references. This allows a route-owning namespace to access and utilize resources in another namespace without proper authorization, bypassing the intended Gateway API cross-namespa...

CVE-2026-97419

A flaw was found in the Linux kernel's High-availability Seamless Redundancy HSR subsystem. When ring error or node down events occur, asynchronous netlink notifications are broadcast exclusively to the root network namespace rather than the device's specific network namespace. This issue allows ...

BIT-ARGO-WORKFLOWS-2026-93991 Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector

Argo Workflows versions 4.1.0 through 4.1.3 contain an authorization bypass vulnerability in ListArchivedWorkflows that fails to apply cluster-scoped access review when the metadata.namespace field selector uses the NotEquals operator. Attackers with namespace-scoped list permissions can use a...

CVE-2026-2270

A flaw was found in Kubernetes kube-controller-manager. The StatefulSet controller restores ControllerRevision data onto the whole StatefulSet object, including metadata. A user with namespace-scoped write access to StatefulSet and ControllerRevision can cause the controller to create a pod in...

CVE-2026-88808 Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same...

CVE-2026-88808 Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same...

CVE-2026-88808 Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clusters

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same...