CVE-2026-34207: CWE-20: Improper Input Validation in baptisteArno typebot.io
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.
AI Analysis
Technical Summary
TypeBot versions before 3.16.0 contain an SSRF vulnerability due to improper input validation (CWE-20) and inadequate SSRF protection (CWE-918). The protection mechanism blocks only literal hostnames and IPs but does not perform DNS resolution, allowing crafted hostnames that resolve to internal or loopback IP addresses to bypass filters. This enables attackers to make the backend HTTP client perform requests to internal services, including loopback, cloud metadata endpoints, or private network targets. The vulnerability has been addressed in TypeBot version 3.16.0.
Potential Impact
Successful exploitation allows an attacker with at least low privileges to induce the backend HTTP client to make unauthorized requests to internal network resources, potentially exposing sensitive data such as cloud metadata or internal services. The confidentiality impact is high, while integrity and availability impacts are low. This could lead to information disclosure and limited disruption of service.
Mitigation Recommendations
Upgrade TypeBot to version 3.16.0 or later, where this SSRF vulnerability has been fixed by improving the validation to include DNS resolution before allowing requests. Since the fix is included in this version, applying this official update is the recommended remediation. Patch status is not explicitly confirmed beyond the version fix statement; verify with the vendor advisory for the latest remediation details.
CVE-2026-34207: CWE-20: Improper Input Validation in baptisteArno typebot.io
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
TypeBot versions before 3.16.0 contain an SSRF vulnerability due to improper input validation (CWE-20) and inadequate SSRF protection (CWE-918). The protection mechanism blocks only literal hostnames and IPs but does not perform DNS resolution, allowing crafted hostnames that resolve to internal or loopback IP addresses to bypass filters. This enables attackers to make the backend HTTP client perform requests to internal services, including loopback, cloud metadata endpoints, or private network targets. The vulnerability has been addressed in TypeBot version 3.16.0.
Potential Impact
Successful exploitation allows an attacker with at least low privileges to induce the backend HTTP client to make unauthorized requests to internal network resources, potentially exposing sensitive data such as cloud metadata or internal services. The confidentiality impact is high, while integrity and availability impacts are low. This could lead to information disclosure and limited disruption of service.
Mitigation Recommendations
Upgrade TypeBot to version 3.16.0 or later, where this SSRF vulnerability has been fixed by improving the validation to include DNS resolution before allowing requests. Since the fix is included in this version, applying this official update is the recommended remediation. Patch status is not explicitly confirmed beyond the version fix statement; verify with the vendor advisory for the latest remediation details.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-26T15:57:52.323Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a108f08e1370fbb482626fe
Added to database: 5/22/2026, 5:14:48 PM
Last enriched: 5/22/2026, 5:29:50 PM
Last updated: 5/23/2026, 6:18:57 PM
Views: 12
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