---
cve: "CVE-2026-40168"
severity: "HIGH"
cvss: 8.2
epss: "37%"
vendor: "gitroomhq"
kev: false
exploited: false
published: "2026-04-10 20:16:22"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T06:51:15+02:00"
---

# CVE-2026-40168

> 8.2 HIGH · 🧪 PoC

## Beschreibung

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Gering | warn |

## Patch verfügbar (OSV)

- 3e8a0ab817ea50475f319797b1256ae9eba0e704 (Commit)
- 30e8b777098157362769226d1b46d83ad616cb06 (Commit)

## Referenzen

- <https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww>
- <https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06>
- <https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40168) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_