CVE-2026-34207— TypeBot: SSRF Protection Bypass via DNS-Resolved Hostnames in Webhook / HTTP Request Validation
Quick assessment
Affected
baptisteArno typebot.io
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Typebot是Baptiste Arnaud个人开发者的一个开源聊天机器人构建器。 TypeBot 3.16.0之前版本存在安全漏洞，该漏洞源于Webhook/HTTP请求块的SSRF保护仅验证URL字符串、阻止的主机名字面量和字面IP格式，未在允许请求前解析DNS，可能导致服务器端请求伪造到回环、云元数据和私有网络目标。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| baptisteArno | typebot.io | < 3.16.0 |
affected |
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I. Basic Information for CVE-2026-34207
Vulnerability Information
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Vulnerability Title
TypeBot: SSRF Protection Bypass via DNS-Resolved Hostnames in Webhook / HTTP Request Validation
Source: CVE Program / CVE List V5
Vulnerability Description
TypeBot is a chatbot builder tool. In versions prior to 3.16.0, SSRF protection for Webhook / HTTP Request blocks validates only the URL string, blocked hostname literals, and literal IP formats. It does not resolve DNS before allowing the request. As a result, a hostname such as ssrf-repro.example that resolves to 127.0.0.1, 169.254.169.254, or RFC1918/private space passes validation and is later fetched by the backend HTTP client. This enables server-side request forgery to loopback, cloud metadata, and private network targets. This issue has been resolved in version 3.16.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Typebot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Typebot是Baptiste Arnaud个人开发者的一个开源聊天机器人构建器。 TypeBot 3.16.0之前版本存在安全漏洞，该漏洞源于Webhook/HTTP请求块的SSRF保护仅验证URL字符串、阻止的主机名字面量和字面IP格式，未在允许请求前解析DNS，可能导致服务器端请求伪造到回环、云元数据和私有网络目标。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| baptisteArno | typebot.io | < 3.16.0 | - |
|
II. Public POCs for CVE-2026-34207
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-34207 (1)
Vendor Advisories for CVE-2026-34207 (1)
Vendor Pages for CVE-2026-34207 (1)
Same Patch Batch · baptisteArno · 2026-05-22 · 11 CVEs total
| CVE-2026-33712 | 10.0 CRITICAL | TypeBot: Unauthenticated SSRF via isolated-vm fetch in preview chat endpoint bypasses SSRF |
| CVE-2026-28445 | 8.7 HIGH | Typebot: Stored XSS via Rating Block Custom Icon Bypasses isUnsafe Sandbox in Builder Prev |
| CVE-2026-39965 | 7.7 HIGH | TypeBot: SSRF via Open Redirect Bypass in HTTP Request and Code Blocks |
| CVE-2026-39968 | 7.1 HIGH | TypeBot: Cross-Workspace Credential Theft via Bot-Engine Preview Endpoint |
| CVE-2026-28444 | 6.5 MEDIUM | Typebot: IDOR in Result Logs Endpoint Allows Cross-Workspace Data Disclosure |
| CVE-2026-39966 | 6.5 MEDIUM | TypeBot: Async filter() bypasses authorization, allowing IDOR in getLinkedTypebots and lea |
| CVE-2026-39969 | 6.5 MEDIUM | TypeBot: WhatsApp Webhook Endpoint Missing Signature Verification |
| CVE-2026-39964 | 5.4 MEDIUM | TypeBot: Stored XSS via javascript: URI in text bubble links — bot author executes JS on v |
| CVE-2026-39967 | 3.1 LOW | TypeBot: Cross-Typebot Result Data Access via Missing typebotId Filter |
| CVE-2026-39970 | TypeBot: Stored Cross-Site Scripting (XSS) via SVG File Upload On Profile Picture Form |
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V. Comments for CVE-2026-34207
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