CVE-2026-48494

UNKNOWN 0.0

TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot.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.

CWE	CWE-639
Vendor	baptistearno
Product	typebot.io
Published	Aug 11, 2026

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Affected Versions

baptisteArno / typebot.io

= 3.16.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3jq github.com: https://github.com/baptisteArno/typebot.io/pull/2499 github.com: https://github.com/baptisteArno/typebot.io/commit/36a618610174fd168fb255d9c8ecc0d2cf61a192 github.com: https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0