TypeBot is a chatbot builder tool. Prior to version 3.17.0, an authenticated user who has read access to any typebot can resume a waiting webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign live `resultId`. The webhook resume handler authorizes the parent typebot first, but then resolves the descendant `result` only by `resultId`.
As a result, an attacker can inject arbitrary webhook JSON into another typebot's suspended session and advance its execution without any access to the victim typebot. Version 3.17.0 patches the issue.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
baptistearno:typebot.io
References 4
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-h67g-6q6g-5…
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-h67g-6q6g-58cj
https://github.com/baptisteArno/typebot.io/pull/2494
https://github.com/baptisteArno/typebot.io/pull/2494
https://github.com/baptisteArno/typebot.io/commit/6f915c3096bd43d4a913f0f2c7a92…
https://github.com/baptisteArno/typebot.io/commit/6f915c3096bd43d4a913f0f2c7a92e8463f81a86
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0