What’s Vulnerable › Vulnerabilities
CVE-2026-53947: Ghost: Member existence leak via magic link sign-in response
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-24 · updated 2026-10-25
- Weakness: CWE-204
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
- TryGhost Ghost: from 5.18.0, < 6.21.1
References
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