CVE-2026-53947

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CVSS 3.1

5.3 medium

EPSS

<1%p28

Published

Jun 24, 2026 (Jun 24, 2026)

Modified

Jun 25, 2026

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.

Weakness: CWE-204
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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