CVE-2026-72849 Budibase before 3.40.0 Identity Confusion via Chat-Link Handoff CSRF
Attackers can use CSRF to bind their chat identity to a victim's account, enabling impersonation and permission inheritance in Budibase.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-72849?
CVE-2026-72849 is a high-severity vulnerability in budibase server, published on 13 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2026-72849?
2 open source packages ship an affected version, including @budibase/server.
| Package | Affected | Fixed in |
|---|---|---|
@budibase/server npm | All versions to 3.38.1 | None |
@budibase/server npm | All versions to 3.38.1 | None |
How do I fix CVE-2026-72849?
No fix has been published for CVE-2026-72849 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-72849 being exploited?
There is no known exploitation of CVE-2026-72849 in the wild and no public exploit code.
Sources
Also known as GHSA-4q4m-8h83-fcmr, GHSA-pvcr-8mvp-w8qr.