CVE-2026-40109

Flux notification-controller is the event forwarder and notification dispatcher for the GitOps Toolkit controllers. Prior to 1.8.3, the gcr Receiver type in Flux notification-controller does not validate the email claim of Google OIDC tokens used for Pub/Sub push authentication. This allows any...

EUVD-2026-21150

Flux notification-controller GCR Receiver missing email validation allows unauthorized reconciliation triggering...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the authentication for Google OIDC tokens in the GCR Receiver webhook endpoint. An attacker can trigger unauthorized reconciliation of resources by presenting any valid Google-issued...

CVE-2026-40109 Flux notification-controller GCR Receiver missing email validation allows unauthorized reconciliation triggering

Flux notification-controller is the event forwarder and notification dispatcher for the GitOps Toolkit controllers. Prior to 1.8.3, the gcr Receiver type in Flux notification-controller does not validate the email claim of Google OIDC tokens used for Pub/Sub push authentication. This allows any...