CVE-2026-40168 (GCVE-0-2026-40168)
Vulnerability from cvelistv5 – Published: 2026-04-10 19:20 – Updated: 2026-04-13 20:55
VLAI
EPSS
VEX
Title
Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream
Summary
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.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-13 20:55 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/gitroomhq/postiz-app/security/… | x_refsource_CONFIRM |
| https://github.com/gitroomhq/postiz-app/commit/30… | x_refsource_MISC |
| https://github.com/gitroomhq/postiz-app/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| gitroomhq | postiz-app |
Affected:
< 2.21.5
|
guessed |
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