GHSA-CHGM-3698-JM42 Ghost: Member existence leak via magic link sign-in response

Impact A discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. Vulnerable versions This vulnerability is present in Ghost from v5.18.0 up to v6.21.0...

NPM: Ghost: Member existence leak via magic link sign-in response

NPM: Ghost: Member existence leak via magic link sign-in response vulnerability discovered by ? in WordPress Npm ghost versions = 5.18.0, 6.21.1...

Ghost: Member existence leak via magic link sign-in response

Impact A discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. Vulnerable versions This vulnerability is present in Ghost from v5.18.0 up to v6.21.0...

CVE-2026-53947 Ghost: Member existence leak via magic link sign-in response

Ghost is a Node.js content management system. From 5.18.0 until 6.21.1, a discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. This vulnerability is...

CVE-2026-53947

Ghost (Node.js CMS) contains a member existence leak via the magic link sign-in flow in versions 5.18.0–6.21.0, caused by differing responses from the members signin endpoints. An unauthenticated user could confirm whether an email is registered on a Ghost site. The issue is fixed in version 6.21...