Budibase: Workspace-scoped builder escalates to global admin via /api/public/v1/roles/assign_CVE-2026-48150

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-27T16:58:18.979Z",
    "modified": "2026-05-27T17:57:41.445Z",
    "type": "cve",
    "title": "Budibase: Workspace-scoped builder escalates to global admin via /api/public/v1/roles/assign",
    "source": "GitHub_M",
    "references": "https://github.com/Budibase/budibase/security/advisories/GHSA-6xp4-cf37-ppjh",
    "id": "CVE-2026-48150",
    "bulletinFamily": "",
    "cwe": [
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "Budibase budibase < 3.39.0",
    "sourceHref": "",
    "cvss": {
        "score": 9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "budibase",
    "version": "< 3.39.0",
    "vendor": "Budibase",
    "ai_description": "Privilege escalation vulnerability in Budibase via /api/public/v1/roles/assign, allowing a workspace-scoped builder to promote themselves or others to global admin",
    "ai_severity": "Critical",
    "ai_vendor": "Budibase",
    "ai_product": "Budibase",
    "ai_version": "< 3.39.0",
    "ai_score": 9
}