TI-2026-35582 Aliases CVE-2026-48146 GHSA-g6qx-g4pr-92v7

Budibase: SSRF via OAuth2 Config Validation — Missing fetchWithBlacklist Protection

HIGH 67CWE-918Published 2026-05-27 · Updated 2026-05-28

Key facts

Attack vector: Network
Privileges required: Low
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-918 and the CVSS impact.

Summary

Budibase is an open-source low-code platform. Prior to 3.39.0, the OAuth2 token fetch function in packages/server/src/sdk/workspace/oauth2/utils.ts uses raw fetch(config.url) with no SSRF protection. The safe wrapper fetchWithBlacklist() exists in the same codebase and is used in every other outbound HTTP call (automation steps, plugin downloads, object store), but was not applied to the OAuth2 token endpoint. A user with BUILDER role can point the OAuth2 token URL to internal services (CouchDB, cloud metadata) to exfiltrate sensitive data. This vulnerability is fixed in 3.39.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00217 12th percentileScored 2026-11-07

Fix Fixed budibase (Budibase): 3.39.0@budibase/server (npm): 3.39.0

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 3.39.0	3.39.0	Patch available	CNA
—	@budibase/server (npm)	before 3.39.0	3.39.0	Patch available	GHSA-g6qx-g4pr-92v7

budibase VendorBudibase Affected before 3.39.0 Fixed in 3.39.0 Patch available CNA
@budibase/server (npm) Vendor— Affected before 3.39.0 Fixed in 3.39.0 Patch available GHSA-g6qx-g4pr-92v7

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 3.39.0
Fix · GHSA-g6qx-g4pr-92v7 @budibase/server (npm) Fixed in 3.39.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-48146
2026-10-03 Alias added: GHSA-g6qx-g4pr-92v7

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-48146

Other 2

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