CVE-2026-48150

The record

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.

Affected packages

Related vulnerabilities

• GHSA-6xp4-cf37-ppjh Budibase: Workspace-scoped builder escalates to global admin via… Same vulnerability
• GHSA-3gp5-q4jw-3v94 Budibase: Basic app users can exfiltrate stored REST datasource auth by rewriting… Also affects @budibase/server
• GHSA-qhv3-wjg8-6fx6 Budibase: Webhook schema endpoint authorization bypass allows unauthenticated mutation of… Also affects @budibase/server
• GHSA-cv96-5348-p5p8 Budibase: Unvalidated VectorDB Host Parameter Enables SSRF Also affects @budibase/server
• GHSA-g6qx-g4pr-92v7 Budibase: SSRF via OAuth2 Config Validation — Missing fetchWithBlacklist Protection Also affects @budibase/server
• CVE-2026-48148 Budibase is an open-source low-code platform. Also affects @budibase/server
• CVE-2026-48152 Budibase is an open-source low-code platform. Also affects @budibase/server
• CVE-2026-48151 Budibase is an open-source low-code platform. Also affects @budibase/server