Simple Newsletter Plugin
Monthly
Simple Newsletter Plugin for WordPress (versions 4.0.0 through 4.3.2) fails to verify that a public requester matches the subscriber whose record is being fetched, exposing stored personal data and the authorization key that controls changes to that subscriber's record to any unauthenticated caller. A publicly available proof-of-concept documented by WPScan demonstrates the attack path, though EPSS at 0.18% (7th percentile) suggests exploitation has remained limited in observed telemetry. Vendor-released patch version 4.3.3 is available and should be applied immediately given the zero-complexity, unauthenticated exploit path.
Simple Newsletter Plugin for WordPress (versions 4.0.0 through 4.3.2) fails to verify that a public requester matches the subscriber whose record is being fetched, exposing stored personal data and the authorization key that controls changes to that subscriber's record to any unauthenticated caller. A publicly available proof-of-concept documented by WPScan demonstrates the attack path, though EPSS at 0.18% (7th percentile) suggests exploitation has remained limited in observed telemetry. Vendor-released patch version 4.3.3 is available and should be applied immediately given the zero-complexity, unauthenticated exploit path.