TI-2026-33455 Aliases CVE-2026-45716 GHSA-c54j-xp92-wh28

Budibase: Builder-to-Admin Privilege Escalation via onboardUsers Endpoint Without SMTP Configuration

MEDIUM 40CWE-269Published 2026-05-27 · Updated 2026-05-27

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Privilege escalation
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269.

Summary

Budibase is an open-source low-code platform. Prior to 3.38.1, the POST /api/global/users/onboard endpoint is protected by workspaceBuilderOrAdmin middleware, allowing any user with builder permissions to access it. When SMTP email is not configured (the default for self-hosted Budibase instances), this endpoint bypasses the admin-restricted invite flow and directly creates users via bulkCreate, accepting arbitrary admin and builder role assignments from the request body. A builder-level user can create a new global admin account and receive the generated password in the response, achieving full privilege escalation. This vulnerability is fixed in 3.38.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00261 17th percentileScored 2026-11-07

Fix Fixed budibase (Budibase): 3.38.1@budibase/worker (npm): 3.38.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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 3.38.1	3.38.1	Patch available	CNA
—	@budibase/worker (npm)	before 3.38.1	3.38.1	Patch available	GHSA-c54j-xp92-wh28

budibase VendorBudibase Affected before 3.38.1 Fixed in 3.38.1 Patch available CNA
@budibase/worker (npm) Vendor— Affected before 3.38.1 Fixed in 3.38.1 Patch available GHSA-c54j-xp92-wh28

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:budibase:budibase::::::::	—	—	Budibase

cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:* Versions — — ·Budibase

Remediation

Fix · CNA budibase (Budibase) Fixed in 3.38.1
Fix · GHSA-c54j-xp92-wh28 @budibase/worker (npm) Fixed in 3.38.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-45716
2026-10-03 Alias added: GHSA-c54j-xp92-wh28

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-45716

Other 3

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

See all 90 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences