CVE-2026-39968 Details
Description
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.
A vulnerability in TypeBot, a chatbot builder tool, allows for cross-workspace credential theft through the bot-engine's preview chat endpoint. This issue affects TypeBot versions through 3.15.2. The vulnerability arises because the preview endpoint accepts a client-controlled workspaceId field, which can be manipulated to bypass credential ownership verification. As a result, any authenticated user can access credentials from any workspace, leading to unauthorized use of sensitive information and potential abuse of external services.
Users can upgrade to TypeBot version 3.16.0, where this vulnerability has been patched. The update includes a fix for the authorization bypass in the preview chat endpoint, ensuring that workspace ownership checks are properly enforced.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 22, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-cq66-9cwr-x8jr | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/baptisteArno/typebot.io/commit/d96f572e6099c5f622c05ba7b8634e6477dcf052 | [email protected] | Source CodeVendor |
| https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0 | [email protected] | Release NotesVendor |
| https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-cq66-9cwr-x8jr | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| CWE-522 | Insufficiently Protected Credentials | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Typebot | <= 3.15.2 (semver) |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 26, 2026 | CVE Modified | CISA-ADP |
| May 22, 2026 | New CVE Received | [email protected] |