---
cve: "CVE-2026-53947"
severity: "MEDIUM"
cvss: 5.3
epss: "21%"
vendor: "TryGhost"
kev: false
exploited: false
published: "2026-06-24 18:07:42"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T05:42:09+02:00"
---

# CVE-2026-53947

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 1d36c589d39f979327106bbcfb4cece7abaea502 (Commit)

## Referenzen

- <https://github.com/TryGhost/Ghost/security/advisories/GHSA-chgm-3698-jm42>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53947) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_