CVE-2026-50132
CVE-2026-50132 · Budibase: Chat Identity Link Hijacking via Missing Consent & CSRF — Account Impersonation in Budibase
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.3 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
budibase
- Versions
- < 3.39.0: Affected
No fix published
@budibase/server npm
- Affected ranges
- SEMVER: < 3.39.0
Update to 3.39.0