Vulnerability Description
Budibase is an open-source low-code platform. Prior to 3.39.0, `GET /api/chat-links/:instance/:token/handoff` is a public endpoint (no auth required) that performs a permanent, state-changing operation: it binds an external chat identity (Slack/Discord/MS Teams) to an authenticated Budibase user account, with no consent UI and no CSRF protection. The session token in the URL is created by the attacker (from their own /link slash command) and embeds the attacker's externalUserId. When an authenticated Budibase victim visits the URL, their account is silently and permanently linked to the attacker's Slack/Discord identity. The server responds with "Authentication succeeded." — no indication of what was linked. This vulnerability is fixed in 3.39.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Budibase | Budibase | < 3.39.0 |
Related Weaknesses (CWE)
References
- https://github.com/Budibase/budibase/security/advisories/GHSA-v7j5-vc4m-723wExploitMitigationVendor Advisory
- https://github.com/Budibase/budibase/security/advisories/GHSA-v7j5-vc4m-723wExploitMitigationVendor Advisory
FAQ
What is CVE-2026-50132?
CVE-2026-50132 is a vulnerability with a CVSS score of 7.3 (HIGH). Budibase is an open-source low-code platform. Prior to 3.39.0, `GET /api/chat-links/:instance/:token/handoff` is a public endpoint (no auth required) that performs a permanent, state-changing operatio...
How severe is CVE-2026-50132?
CVE-2026-50132 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-50132?
Check the references section above for vendor advisories and patch information. Affected products include: Budibase Budibase.