CVE-2026-33712
TypeBot: Unauthenticated SSRF via isolated-vm fetch in preview chat endpoint bypasses SSRF controls
Vexday Risk Score
48Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 10EPSS 0.3%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
22 May 2026Published on NVD
25 May 2026Public PoC
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
baptisteArno · typebot.iopublic PoCs found — 1
githubgithub.com/portbuster1337/CVE-2026-33712★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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