Report: CVE-2026-42875 - External Secrets Operator: Namespace Isolation Bypass in CAProvider ConfigMap Re

Report: CVE-2026-42875 - External Secrets Operator: Namespace Isolation Bypass in CAProvider ConfigMap Re

CVE ID :CVE-2026-42875 Published : May 11, 2026, 8:25 p.m. | 36 minutes ago Description :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 was set. This bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver. This vulnerability is fixed in 2.4.0. Severity: 5.3 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
MEDIUM
Published
May 11, 2026
Affected Product: Kubernetes