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CVE-2026-40168 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06 GitHub, Inc.
https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.5 GitHub, Inc.
https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-918 Server-Side Request Forgery (SSRF) GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-40168
NVD Published Date:
04/10/2026
NVD Last Modified:
04/10/2026
Source:
GitHub, Inc.