CVE-2026-40168
High · 8.2CVSS
8.2
EPSS
0.5%
Published
Apr 10, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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