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CVE-2026-34207

TypeBot: SSRF Protection Bypass via DNS-Resolved Hostnames in Webhook / HTTP Request Validation

Published: May 22, 2026Updated: May 22, 2026 Sources: CVE ListCWE-20CWE-20: Improper Input Validation
NVD MITRE
7.6CVSSHIGH
EPSS Score
0.3%
Top 77.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-20CWE-20: Improper Input ValidationCWE-918CWE-918: Server-Side Request Forgery (SSRF)

Affected Products

typebot.iobaptisteArno
SaaS
Cloud & SaaS / saas-application
baptistearnoCloud & SaaSaka typebot.io

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-grcc-6x37-wwgp
github.com
https://github.com/baptisteArno/typebot.io/commit/23818bb0e54db23c456ee3fa6b12d82b2af848b8
github.com
https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0
github.com

Timeline

Published
May 22, 2026
Last Updated
May 22, 2026

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