What’s Vulnerable › Vulnerabilities

CVE-2026-72849: Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-08
• Weakness: CWE-352

Description

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.

Affected products

• budibase server: before 3.40.0 — fixed in 3.40.0

How to fix

Upgrade to a fixed version: budibase server 3.40.0. Check the vendor advisory for mitigations.

References

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

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