---
id: CVE-2026-72849
title: >-
  Budibase before 3.40.0 contains a cross-site request forgery vulnerability in
  the chat-link handoff endpoint that allows attackers to bind an external chat
  identity to a victim's account
summary: >-
  Budibase before 3.40.0 contains a cross-site request forgery vulnerability in
  the chat-link handoff endpoint that allows attackers to bind an external chat
  identity to a victim's account. Attackers can craft a phishing page that
  auto-sub…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-352
vendor: budibase
product: server
affected:
  - server < 3.40.0
published: '2026-08-13'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:36.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72849'
references:
  - url: >-
      https://github.com/Budibase/budibase/security/advisories/GHSA-pvcr-8mvp-w8qr
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/budibase-before-identity-confusion-via-chat-link-handoff-csrf
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-17T15:46:09.441211Z'
epss: 0.00162
epssPercentile: 0.04881
ingestedAt: '2026-10-08T16:52:14.716Z'
---

## Overview

Budibase before 3.40.0 contains a cross-site request forgery vulnerability in the chat-link handoff endpoint that allows attackers to bind an external chat identity to a victim's account. Attackers can craft a phishing page that auto-submits a POST request with a leaked confirmation token to bind their chat identity to a victim user's account, enabling impersonation within agent operations and inheritance of victim permissions.

## Remediation

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