What’s Vulnerable › Vulnerabilities

CVE-2026-48494: TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-10-23
• Weakness: CWE-639

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an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot.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

Affected products

• baptisteArno typebot.io: = 3.16.1

References

• https://github.com/baptisteArno/typebot.io/commit/36a618610174fd168fb255d9c8ecc0d2cf61a192
• 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-j3jq
• https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3jq

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