Mass Assignment Vulnerability in Budibase Low-Code Platform
CVE-2026-54351

8.2HIGH

Key Information:

Vendor

Budibase

Status
Budibase
Vendor
CVE Published:
26 June 2026

What is CVE-2026-54351?

Budibase, an open-source low-code platform, is susceptible to a mass assignment vulnerability due to a publicly accessible webhook trigger endpoint. This flaw allows an attacker to manipulate automation execution parameters by overwriting the internal appId property through crafted POST requests. Consequently, when webhook automation is processed asynchronously, the attacker can execute arbitrary actions within the victim's workspace, leading to unauthorized read/write access to the database. This vulnerability has been addressed in version 3.39.9.

Affected Version(s)

budibase < 3.39.9

References

https://github.com/Budibase/budibase/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.