Vulnerability in Budibase Low-Code Platform Affecting User Roles
CVE-2026-54356

7.1HIGH

Key Information:

Vendor

Budibase

Status
Budibase
Vendor
CVE Published:
17 August 2026

What is CVE-2026-54356?

An authentication issue exists in Budibase, an open-source low-code platform, prior to version 3.41.3. Authenticated users with the BASIC role can manipulate the POST /api/attachments/:datasourceId/url endpoint, allowing them to supply attacker-controlled values for S3 bucket and key, facilitating unauthorized access to sensitive signedUrl and publicUrl data backed by stored S3 credentials. This vulnerability has been addressed in version 3.41.3.

Affected Version(s)

budibase < 3.41.3

References

https://github.com/Budibase/budibase/security/advisories/...
x_refsource_CONFIRM
https://github.com/Budibase/budibase/releases/tag/3.41.3
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.