CVE-2026-45716
Budibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Configuration
- State
- Published
- Severity
- 8.8 High
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Reserved
- May 13, 2026
Description
Budibase is an open-source low-code platform. Prior to 3.38.1, the POST /api/global/users/onboard endpoint is protected by workspaceBuilderOrAdmin middleware, allowing any user with builder permissions to access it. When SMTP email is not configured (the default for self-hosted Budibase instances), this endpoint bypasses the admin-restricted invite flow and directly creates users via bulkCreate, accepting arbitrary admin and builder role assignments from the request body. A builder-level user can create a new global admin account and receive the generated password in the response, achieving full privilege escalation. This vulnerability is fixed in 3.38.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
budibaseBudibase |
|
References
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