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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Budibase | budibase | affected |
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Advisories
| Source | ID | Title |
|---|---|---|
 Github GHSA |
GHSA-c54j-xp92-wh28 | Budibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Configuration |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 27 May 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Budibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Configuration | |
| Weaknesses | CWE-269 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-27T17:09:43.383Z
Reserved: 2026-05-13T05:51:48.666Z
Link: CVE-2026-45716
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses