---
id: CVE-2026-73303
title: Budibase is an open-source low-code platform
summary: >-
  Budibase is an open-source low-code platform. Prior to 3.40.0, POST
  /api/v2/email on account.budibase.app accepted a client-controlled accountId
  without binding it to the authenticated session, while checking only
  currentEmail. An authen…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N'
cwe:
  - CWE-639
published: '2026-08-12'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:56:50.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73303'
references:
  - url: 'https://github.com/Budibase/budibase/releases/tag/3.40.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-c8vc-7pv3-g98p
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00232
epssPercentile: 0.14306
ingestedAt: '2026-09-08T21:11:12.276Z'
---

## Overview

Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who obtains a victim account identifier can start the email-change workflow for the victim, receive and submit the verification code through POST /api/v2/email/verification, move the victim email to an attacker-controlled address, and complete a password reset as the victim. This issue is fixed in version 3.40.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.