{"cve":"CVE-2026-53947","nvd":{"published":"2026-06-24T19:17:12.337","modified":"2026-10-25T22:10:00.150","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-204"],"references":["https://github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-53947","score":0.00345,"percentile":0.27726,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-chgm-3698-jm42","url":"https://osv.dev/vulnerability/GHSA-chgm-3698-jm42","summary":"Ghost: Member existence leak via magic link sign-in response","modified":"2026-08-04T22:00:24.102958777Z","packages":[{"ecosystem":"npm","name":"ghost","purl":"pkg:npm/ghost","ranges":[">=5.18.0 <6.21.2"],"fixed":["6.21.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}