baptisteArno typebot.io up to 3.17.1 SSRF Validator validateHttpReqUrl.ts validateHttpReqUrl address server-side request forgery

Summaryinfo

A vulnerability was found in baptisteArno typebot.io up to 3.17.1. It has been classified as problematic. This issue affects the function validateHttpReqUrl of the file packages/lib/src/ssrf/validateHttpReqUrl.ts of the component SSRF Validator. The manipulation of the argument address leads to server-side request forgery. This vulnerability is documented as CVE-2026-49213. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in baptisteArno typebot.io up to 3.17.1. It has been rated as problematic. This issue affects the function validateHttpReqUrl of the file packages/lib/src/ssrf/validateHttpReqUrl.ts of the component SSRF Validator. The manipulation of the argument address with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. The summary by CVE is:

TypeBot is a chatbot builder tool. Prior to 3.17.2, Typebot's shared SSRF validator in packages/lib/src/ssrf/validateHttpReqUrl.ts can be bypassed with the IPv6 unspecified address :: because validateIPAddress blocks local, metadata, and private ranges but does not block :: or its expanded form. A workspace editor or creator can configure a server-side HTTP Request block or guarded script fetch to make the Typebot server connect to local HTTP services through safeKy, including flows triggered by POST /v1/typebots/{publicId}/startChat or POST /v1/sessions/{sessionId}/continueChat. This issue is fixed in version 3.17.2.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-49213 since 05/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 3.17.2 eliminates this vulnerability.

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Productinfo

Vendor

• baptisteArno

Name

• typebot.io

Version

• 3.17.0
• 3.17.1

Website

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

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