CVE-2026-47704 Missing authorization in typebot.io
An authenticated user can hijack another user's chatbot session by injecting arbitrary webhook data, allowing unauthorized control of the bot's execution flow.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47704?
CVE-2026-47704 is a high-severity missing authorization vulnerability in baptisteArno typebot.io, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-47704?
How do I fix CVE-2026-47704?
No fix has been published for CVE-2026-47704 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-47704 being exploited?
There is no known exploitation of CVE-2026-47704 in the wild and no public exploit code.
Sources
Also known as GHSA-h67g-6q6g-58cj.