CVE-2026-33712 | Typebot is a chatbot builder tool. In versions 3.15.2 and pr… | CVSS 10.0 CRITICAL

Description

Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST /api/v1/typebots/{typebotId}/preview/startChat) allows unauthenticated users to achieve Server-Side Request Forgery (SSRF) by supplying a custom typebot definition with server-side code blocks. The fetch function exposed inside the isolated-vm sandbox calls Node.js native fetch without the SSRF validation (validateHttpReqUrl) that protects the HTTP Request block. This bypasses all SSRF mitigations added after GHSA-8gq9-rw7v-3jpr. Exploitation of this unauthenticated SSRF vulnerability can lead to cloud credential theft, internal network access and data exfiltration for any self-hosted Typebot deployments and hosted services. This issue has been fixed in version 3.16.0.

Metadata

CVE ID: CVE-2026-33712
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-03-23 17:06 UTC
Published: 2026-05-22 16:50 UTC
Last updated: 2026-05-22 17:19 UTC
Primary CWE: CWE-862
CWE-862: Missing Authorization
Vendor / Product: baptisteArno / typebot.io
Sources: cve.org · NVD

Severity & Metrics

10.0 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
baptisteArno	typebot.io	—	< 3.16.0

Weakness (CWE)

CWE	Source	Description
CWE-862	cna	CWE-862: Missing Authorization
CWE-918	cna	CWE-918: Server-Side Request Forgery (SSRF)

CVSS scores (1)

Score	Severity	Version	Source	Vector
10.0	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References (2)

https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9 https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-vc2q-r6rq-ggj9
https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0 https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0