CVE-2026-34746: Payload has Authenticated SSRF via Upload Functionality
Impact
An authenticated Server-Side Request Forgery (SSRF) vulnerability existed in the upload functionality.
Authenticated users with create or update access to an upload-enabled collection could cause the server to make outbound HTTP requests to arbitrary URLs.
Consumers are affected if ALL of these are true:
- Payload version < v3.79.1 - At least one collection with upload enabled - An authenticated user has create or update access to that collection
Patches
This vulnerability has been patched in v3.79.1. Users should upgrade to v3.79.1 or later.
Workarounds
Until consumers can upgrade:
- Restrict create and update access to upload-enabled collections to trusted roles only. - Limit outbound network access from your Payload server where possible.
Other sources
Payload is a free and open source headless content management system. Prior to version 3.79.1, an authenticated Server-Side Request Forgery (SSRF) vulnerability exists in the upload functionality. Authenticated users with create or update access to an upload-enabled collection could cause the server to make outbound HTTP requests to arbitrary URLs. This issue has been patched in version 3.79.1.
— MITRE