Budibase: SSO OAuth2 Token Leakage via User Metadata Endpoints to Power-Role Users
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
Budibase is an open-source low-code platform. Prior to 3.39.25, GET /api/users/metadata and GET /api/users/metadata/:id returned user objects processed by packages/server/src/utilities/global.ts without removing oauth2.accessToken or oauth2.refreshToken. A user with the POWER role could retrieve the identity-provider credentials of SSO-authenticated users and use the refresh tokens for persistent access to connected services. This issue is fixed in version 3.39.25.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Budibase | budibase | before 3.39.25 | 3.39.25 | Patch available | CNA |
| — | @budibase/server (npm) | before 3.39.25 | 3.39.25 | Patch available | GHSA-fcrw-f7gg-6g9f |
- budibase VendorBudibase Affected before 3.39.25 Fixed in 3.39.25 Patch available CNA
- @budibase/server (npm) Vendor— Affected before 3.39.25 Fixed in 3.39.25 Patch available GHSA-fcrw-f7gg-6g9f
Remediation
- Fix · CNA budibase (Budibase) Fixed in 3.39.25
- Fix · GHSA-fcrw-f7gg-6g9f @budibase/server (npm) Fixed in 3.39.25 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73304
- 2026-10-03 Alias added: GHSA-fcrw-f7gg-6g9f
References
Other 6
- https://github.com/Budibase/budibase/security/advisories/GHSA-fcrw-f7gg-6g9f
- https://github.com/Budibase/budibase/pull/19110
- https://github.com/Budibase/budibase/commit/80a31f6c3354620aa90e50af8a2c614333084621
- https://github.com/Budibase/budibase/releases/tag/3.39.25
- https://github.com/Budibase/budibase/commit/7b8ba11a2c8b233c35e7728dd752dba25ef919a4
- https://github.com/Budibase/budibase
More Budibase vulnerabilities
- TI-2026-39242 Budibase: Anonymous NoSQL operator injection via published-app query templates CVSS 3.1CRITICAL 10.0
- TI-2026-51076 Budibase before 3.40.0 SQL Injection via Unauthenticated Webhook CVSS 4.0CRITICAL 9.0
- TI-2026-24369 Budibase Universal Auth Bypass via Webhook Query Param Injection CVSS 3.1CRITICAL 9.1
- TI-2026-56709 Budibase before 3.41.3 Remote Code Execution via Plugin eval() CVSS 4.0CRITICAL 9.4
- TI-2026-51425 Budibase: SQL Injection via `multipleStatements: true` CVSS 3.1CRITICAL 9.6
- TI-2026-51075 Budibase before 3.40.0 Arbitrary File Write via Path Traversal CVSS 4.0CRITICAL 9.4
Sources
- CVE-2026-73304 · CVE Program
- CVE-2026-73304 · NVD
- FIRST EPSS
- GHSA-fcrw-f7gg-6g9f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences