CVE Tools
Sign in

CVE-2026-33712

TypeBot: Unauthenticated SSRF via isolated-vm fetch in preview chat endpoint bypasses SSRF controls

Published: May 22, 2026Updated: May 22, 2026 Sources: CVE ListCWE-862CWE-862: Missing Authorization
NVD MITRE
10.0CVSSCRITICAL
EPSS Score
0.3%
Top 73.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-862CWE-862: Missing AuthorizationCWE-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

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

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

MITRE ATT&CK

3 techniques
Command and Control
Initial Access
View detailed technique mapping

References

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

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-33712 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows