Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-53947 BIT-ghost-2026-53947EUVD-2026-39022GHSA-chgm-3698-jm42

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

Published Jun 24, 2026 · Updated Jun 25, 2026 · Assigned by GitHub_M

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

VendorProductAffectedFixed
TryGhost Ghost >= 5.18.0, < 6.21.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm ghost >= 5.18.0, < 6.21.2 6.21.2 GHSA-chgm-3698-jm42

References