8.2

CVE-2026-40168

Exploit

Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gitroom ≫ Postiz Version < 2.21.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.37% 0.287
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
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.

https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww
Vendor Advisory
Exploit
Mitigation
https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06
Patch
https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5
Product
Release Notes