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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-53947

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

Description

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 fixed in 6.21.1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

TryGhost Ghost

  • >= 5.18.0, < 6.21.1affected

References