high8.2
CVE-2026-40168
Postiz is an AI social media scheduling tool.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gitroom | Postiz | before 2.21.5 |