PT-2026-32029 · Postiz · Postiz

S4Nso · Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-40168

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Postiz versions prior to 2.21.5

Description Postiz, an AI social media scheduling tool, has a Server-Side Request Forgery (SSRF) issue in the /api/public/stream endpoint. The application validates the initial URL but does not re-validate the final destination after HTTP redirects. This allows an attacker to provide a public HTTPS URL that passes initial validation and then redirects the server-side request to an internal resource.

Recommendations Update to version 2.21.5 or later.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-40168

Affected Products

Postiz

References · 6

• 🔥 https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww · Exploit
• https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-40168 · Security Note
• https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5 · Note
• https://twitter.com/CVEnew/status/2042710184473092215 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2042725649362661711 · Twitter Post