{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53947", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-11T15:50:01.281Z", "datePublished": "2026-06-24T18:07:42.965Z", "dateUpdated": "2026-06-25T17:09:22.498Z"}, "containers": {"cna": {"title": "Ghost: Member existence leak via magic link sign-in response", "problemTypes": [{"descriptions": [{"cweId": "CWE-204", "lang": "en", "description": "CWE-204: Observable Response Discrepancy", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42"}], "affected": [{"vendor": "TryGhost", "product": "Ghost", "versions": [{"version": ">= 5.18.0, < 6.21.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-24T18:07:42.965Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-chgm-3698-jm42", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-25T17:09:11.479372Z", "id": "CVE-2026-53947", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T17:09:22.498Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.18.0,6.21.1)"}}], "enrichment": {"confidence": 88.0, "confidence_source": "matching", "scores": [{"score": 88.0, "source": "matching"}]}, "original": {"product": "Ghost", "source": "cna", "vendor": "TryGhost"}, "product": "ghost", "vendor": "ghost"}], "created": "2026-06-24T20:00:10.381696+00:00", "updated": "2026-06-25T13:15:03.632427+00:00", "vendors": ["ghost", "ghost$PRODUCT$ghost"]}