---
cve: "CVE-2026-105648"
severity: "MEDIUM"
cvss: 4.0
epss: "0.3%"
vendor: "TryGhost"
kev: false
exploited: false
published: "2026-10-05 20:17:13"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-23T16:17:37+02:00"
---

# CVE-2026-105648

> 4.0 MEDIUM · 🧪 PoC

## Beschreibung

Ghost is a Node.js content management system. From 6.0.9 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network on some network configurations. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-10-06 16:54:19
- CNA-CVSS: **4.0** (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-184** — Incomplete List of Disallowed Inputs
  The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.
- **CWE-918** — Server-Side Request Forgery (SSRF)
  The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

## Angriffsmuster (CAPEC)

- [CAPEC-3 — Using Leading 'Ghost' Character Sequences to Bypass Input Filters](https://capec.mitre.org/data/definitions/3.html) _(Severity: Medium)_
- [CAPEC-6 — Argument Injection](https://capec.mitre.org/data/definitions/6.html) _(Severity: High)_
- [CAPEC-15 — Command Delimiters](https://capec.mitre.org/data/definitions/15.html) _(Severity: High)_
- [CAPEC-43 — Exploiting Multiple Input Interpretation Layers](https://capec.mitre.org/data/definitions/43.html) _(Severity: High)_
- [CAPEC-71 — Using Unicode Encoding to Bypass Validation Logic](https://capec.mitre.org/data/definitions/71.html) _(Severity: High)_
- [CAPEC-73 — User-Controlled Filename](https://capec.mitre.org/data/definitions/73.html) _(Severity: High)_
- [CAPEC-120 — Double Encoding](https://capec.mitre.org/data/definitions/120.html) _(Severity: Medium)_
- [CAPEC-182 — Flash Injection](https://capec.mitre.org/data/definitions/182.html) _(Severity: Medium)_

## Patch verfügbar (OSV)

- 8d5bded685b9b2019d47e298dc4594a1c4049557 (Commit)
- 20d3f792bf4a7c349ee56b746a067550d8684ff5 (Commit)

## Referenzen

- <https://github.com/TryGhost/Ghost/security/advisories/GHSA-r7f2-6fj8-6fg2>
- <https://github.com/TryGhost/Ghost/pull/30917>
- <https://github.com/TryGhost/Ghost/commit/20d3f792bf4a7c349ee56b746a067550d8684ff5>
- <https://github.com/TryGhost/Ghost/releases/tag/v6.65.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-105648/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_