CVE-2026-40168
Postiz has Server-Side Request Forgery via Redirect Bypass in /api/public/stream
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-918 |
| Vendor | gitroomhq |
| Product | postiz-app |
| Published | Apr 10, 2026 |
| Last Updated | Apr 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
Low
Affected Versions
gitroomhq / postiz-app
< 2.21.5