baptisteArno typebot.io up to 3.15.x Preview Chat Endpoint getCredentials access control

Summaryinfo

A vulnerability, which was classified as critical, has been found in baptisteArno typebot.io up to 3.15.x. The affected element is the function getCredentials of the component Preview Chat Endpoint. The manipulation leads to access control. This vulnerability is documented as CVE-2026-39968. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in baptisteArno typebot.io up to 3.15.x and classified as critical. This issue affects the function getCredentials of the component Preview Chat Endpoint. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

TypeBot is a chatbot builder tool. In versions 3.15.2 and prior, the fix for GHSA-4xc5-wfwc-jw47 ("Credential Theft via Client-Side Script Execution and API Authorization Bypass") is incomplete. While the builder's getCredentials tRPC endpoint was patched with workspace membership checks, the bot-engine runtime still allows any authenticated user to use credentials from any workspace via the preview chat endpoint. The bot-engine's getCredentials() utility function uses a falsy check (if (workspaceId && ...)) for workspace ownership validation. Since the preview endpoint accepts a client-controlled workspaceId field and the Zod schema allows empty strings, an attacker can supply workspaceId: "" to bypass credential ownership verification entirely. Exploitation can result in credential exfiltration, external service abuse, financial damage and a data breach.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-39968 since 04/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 3.16.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch d96f572e6099c5f622c05ba7b8634e6477dcf052 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• baptisteArno

Name

• typebot.io

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15

License

• open-source

Website

• Product: https://github.com/baptisteArno/typebot.io/

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