TI-2026-39248 Aliases CVE-2026-54356 GHSA-6x9p-4r67-5gjx

Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`

MEDIUM 64CWE-862Published 2026-08-17 · Updated 2026-08-18

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

Budibase is an open-source low-code platform. Prior to 3.41.3, POST /api/attachments/:datasourceId/url in packages/server/src/api/routes/static.ts and packages/server/src/api/controllers/static/index.ts allows an authenticated published-app user with the BASIC role to supply attacker-controlled bucket and key values and obtain signedUrl and publicUrl values backed by stored S3 datasource credentials. This issue is fixed in version 3.41.3.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00352 29th percentileScored 2026-11-07

Fix Fixed budibase (Budibase): 3.41.3

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 3.41.3	3.41.3	Patch available	CNA
—	@budibase/server (npm)	up to 3.38.1	—	No fix listed	GHSA-6x9p-4r67-5gjx

budibase VendorBudibase Affected before 3.41.3 Fixed in 3.41.3 Patch available CNA
@budibase/server (npm) Vendor— Affected up to 3.38.1 Fixed in — No fix listed GHSA-6x9p-4r67-5gjx

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 3.41.3

Timeline

2026-10-02 Threatist record created from CVE-2026-54356
2026-10-03 Alias added: GHSA-6x9p-4r67-5gjx

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-54356

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