CVE-2026-72849

HIGH 7.7

Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-352
Vendor	budibase
Product	server
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

budibase / server

0 < 3.40.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Budibase/budibase/security/advisories/GHSA-pvcr-8mvp-w8qr vulncheck.com: https://www.vulncheck.com/advisories/budibase-before-identity-confusion-via-chat-link-handoff-csrf

Credits

🔍 hypnguyen1209