CVE-2026-30963

Capsule is a multi-tenancy and policy-based framework for Kubernetes. To defend against namespace hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and...

EUVD-2026-33739

Capsule is a multi-tenancy and policy-based framework for Kubernetes. To defend against namespace hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and...

CVE-2026-30963 Capsule Namespace Hijacking via subresource

Capsule is a multi-tenancy and policy-based framework for Kubernetes. To defend against namespace hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and...

CVE-2026-30963

Capsule (a Kubernetes multi-tenancy framework) relied on a webhook to validate namespace updates, but prior to v0.13.0 it did not intercept namespace/status or namespace/finalize subresource changes. This omission enables a tenant with permission to modify those subresources to hijack other names...

GHSA-2WW6-HF35-MFJM Capsule Namespace Hijacking via subresource

Summary To defend against namespace hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and namespace/status subresource APIs can also modify various fields of a...

Capsule Namespace Hijacking via subresource

Summary To defend against namespace hijacking achieved through update/patch operations on namespaces, Capsule uses a webhook to validate update requests targeting namespaces. However, in Kubernetes, the namespace/finalize and namespace/status subresource APIs can also modify various fields of a...

PT-2026-44722

Name of the Vulnerable Software and Affected Versions Capsule versions prior to 0.13.0 Description Capsule uses a webhook to validate update requests targeting namespaces to prevent namespace hijacking. However, the webhook fails to define interception rules for the 'namespace/finalize' and...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the overrides.yoke.cd/flight annotation, which allows a user-supplied URL to be used directly by the controller without validation. An attacker can execute arbitrary code within the controller context by...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the overrides.yoke.cd/flight annotation, which allows a user-supplied URL to be used directly by the controller without validation. An attacker can execute arbitrary code within the controller context by...

Important: Red Hat Security Advisory: Gatekeeper v3.18.0

Gatekeeper v3.18.0 Gatekeeper v3.18.0 Gatekeeper is a validating webhook with auditing capabilities that can enforce custom resource definition-based policies that are run with the Open Policy Agent OPA. Gatekeeper is supported through a Red Hat Advanced Cluster Management for Kubernetes...

Duplicate Advisory: KubeVirt arbitrary host file read from the VM

Duplicate Advisory This advisory is a duplicate of GHSA-qv98-3369-g364. This link is maintained to preserve external references. Original Description Summary As part of a Kubevirt audit performed by NCC group, a finding dealing with systemic lack of path sanitization which leads to a path travers...

PT-2022-14121 · Kubevirt +1 · Kubevirt +1

Name of the Vulnerable Software and Affected Versions: KubeVirt versions up to 0.56 KubeVirt version 0.55.1 Description: A path traversal vulnerability in KubeVirt allows a user able to configure the kubevirt to read arbitrary files on the host filesystem which are publicly readable or which are...

Oracle Linux 7 / 8 : olcne / istio / istio (ELSA-2022-9362)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9362 advisory. - Addresses CVE-2022-24726, CVE-2022-24921 istio Tenable has extracted the preceding description block directly from the Oracle Linux security...

CVE-2022-24726

Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the...

CVE-2022-24726 Unauthenticated control plane denial of service attack in Istio

Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the...

Information Disclosure

github.com/kubernetes/kubernetes is vulnerable to information disclosure and malicious redirection. If --profiling is enabled on the kube-apiserver, an attacker with a control over a validating or mutating webhook are able to access the kube-apiserver process logs and are able to redirect...

DEBIAN-CVE-2020-8561

A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the lo...

UBUNTU-CVE-2020-8561

A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the lo...

Kubernetes: API Server DoS (crash?) if many large resources (~1MB each) are concurrently/repeatedly sent to an external Validating WebHook endpoint

Report Submission Form Summary: I was trying to explore a way to stealthily send lots of data outside a private GKE cluster by way of misusing the Validating Webhook mechanism. The idea would be that a cluster-admin could install a webhook and then initiate resources like a secret or configmap th...