Vulnerability Description
TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign preview phone number tied to another preview session. The WhatsApp test-webhook handler authorizes the parent typebot first, but then resolves the preview chat session only by `wa-preview-{phone}`. As a result, an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot. Version 3.17.0 patches the issue.
Related Weaknesses (CWE)
References
- https://github.com/baptisteArno/typebot.io/commit/36a618610174fd168fb255d9c8ecc0
- https://github.com/baptisteArno/typebot.io/pull/2499
- https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0
- https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3
- https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3
FAQ
What is CVE-2026-48494?
CVE-2026-48494 is a documented vulnerability. TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixi...
How severe is CVE-2026-48494?
CVSS scoring is not yet available for CVE-2026-48494. Check NVD for updates.
Is there a patch for CVE-2026-48494?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.