CVE-2026-50136

Budibase is an open-source low-code platform. Prior to 3.39.3, the application server exposes an unauthenticated endpoint that generates S3 PutObject presigned URLs using credentials stored in a workspace datasource. The route is protected only by the recaptcha middleware and does not require authentication, table permission, datasource permission, or builder access. A public caller who knows a workspace ID and S3 datasource ID can request a signed upload URL for attacker-controlled bucket and key values. This vulnerability is fixed in 3.39.3.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/Budibase/budibase/security/advisories/GHSA-jj36-r9w3-3pfh	Exploit Vendor Advisory
https://github.com/Budibase/budibase/security/advisories/GHSA-jj36-r9w3-3pfh	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-26 21:16

Updated : 2026-06-30 19:40

NVD link : CVE-2026-50136

Mitre link : CVE-2026-50136

CVE.ORG link : CVE-2026-50136

JSON object : View

Products Affected

budibase

budibase

CWE

CWE-306

Missing Authentication for Critical Function

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