CVE-2026-48150
CriticalSummary
Budibase is a low-code platform that prior to version 3.39.0 had a vulnerability in the /api/public/v1/roles/assign endpoint. It allows users with builder roles to promote themselves to global admin, leading to tenant-wide privilege escalation.
Risk Assessment
Organizations using Budibase may be exposed to unauthorized access to administrative privileges, potentially leading to serious security breaches and data loss.
Recommendation
It is recommended to upgrade to version 3.39.0 or later to mitigate this vulnerability and review user permissions to minimize the risk of privilege escalation.
Original NVD description (English source)
Budibase is an open-source low-code platform. Prior to 3.39.0, /api/public/v1/roles/assign is guarded by the builderOrAdmin middleware, which passes any user who is a builder for the app id in the x-budibase-app-id header. That check admits both global builders and workspace-scoped builders (builder.apps set but builder.global unset). The controller then spreads the request body into the SDK call, and the SDK grants builder.global=true or admin.global=true on whichever user ids the caller supplies. Bob, a workspace-scoped builder with an API key, promotes himself or any other user to global admin with one POST. The whole flow is tenant-wide privilege escalation from an app-level role, available to anyone with an Enterprise license that unlocks the EXPANDED_PUBLIC_API feature. This vulnerability is fixed in 3.39.0.