Medium severity5.3NVD Advisory· Published Jun 24, 2026· Updated Jun 25, 2026
CVE-2026-53947
CVE-2026-53947
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.
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Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-chgm-3698-jm42ghsaADVISORY
- github.com/TryGhost/Ghost/commit/fb2bb634653d99de68fc42d415721d755284fe30ghsa
- github.com/TryGhost/Ghost/pull/26752ghsa
- github.com/TryGhost/Ghost/releases/tag/v6.21.1ghsa
- github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42nvd
- nvd.nist.gov/vuln/detail/CVE-2026-53947ghsa
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