CVE-2026-48494: TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids
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an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot.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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
TypeBotto a version that resolves this vulnerability.Fixed in 3.17.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-48494?
CVE-2026-48494 has a risk rating of 47, indicating a moderate level of severity.
How do I fix CVE-2026-48494?
To fix CVE-2026-48494, update TypeBot to version 3.16.2 or later to mitigate the vulnerability.
What systems are affected by CVE-2026-48494?
CVE-2026-48494 affects TypeBot versions prior to 3.16.2, specifically version 3.16.1.
What is the main issue described in CVE-2026-48494?
CVE-2026-48494 allows an authenticated user to exploit session IDs to access WhatsApp preview webhooks from other typebots.
Who can be compromised by CVE-2026-48494?
Authenticated users with read access can be compromised by the vulnerability in CVE-2026-48494.