CVE-2026-42875

A flaw was found in External Secrets Operator. Namespaced SecretStore resources configured with CAProvider of type ConfigMap, when caProvider.namespace is set, could resolve Certificate Authority CA material from other namespaces. This bypasses the intended namespace boundary, potentially allowin...

CVE-2026-42875 External Secrets Operator: Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.0, Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA material from another namespace when caProvider.namespace w...

PT-2026-37287

Name of the Vulnerable Software and Affected Versions External Secrets Operator versions prior to 2.4.0 Description Namespaced SecretStore resources using CAProvider with type ConfigMap could resolve CA material from a different namespace when the caProvider.namespace variable was set. This...