CVE-2026-39967 TypeBot: Cross-Typebot Result Data Access via Missing typebotId Filter
Authenticated users can access other users' chatbot result data, including PII, by supplying foreign result IDs due to missing typebotId filtering.
- 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-2026-39967?
CVE-2026-39967 is a low-severity missing authorization vulnerability in baptisteArno typebot.io, published on 22 May 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. In versions 3.15.2 and prior, the bot engine's the findResult query does not filter results by typebotId, allowing an authenticated user to load result data (user answers, variable values) from a different typebot by supplying a foreign resultId to the startChat endpoint. Exploitation is constrained by CUID2's cryptographically random 24-character IDs (making brute-force infeasible), the requirement that rememberUser be enabled, and the need for matching variable names in the current typebot. If successfully exploited, an attacker can access the original user's previous answers, session variable values, and hasStarted flag, potentially exposing PII like names, emails, and phone numbers. This issue has been fixed in version 3.16.0.
Which versions are affected by CVE-2026-39967?
How do I fix CVE-2026-39967?
No fix has been published for CVE-2026-39967 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-2026-39967 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-39967 exists.
Sources
Also known as GHSA-f475-7m4x-m6mx.