CVE-2026-33712Public exploitNetwork attack vector

Unauthenticated SSRF via unvalidated sandbox fetch

Published May 22, 2026 · Updated May 22, 2026

Server-side request forgery in Typebot 3.15.2 and earlier allows remote attackers to access internal services through the preview chat endpoint. The unauthenticated startChat preview procedure accepts a caller-supplied bot definition, while executeFunction exposes native Node.js fetch without validateHttpReqUrl. A crafted server-side code block therefore reaches cloud metadata or private network services and returns response data through chat output.

CVSS severity10.0
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Typebot 3.15.2 and earlier allows remote attackers to access internal services through the preview chat endpoint. The unauthenticated startChat preview procedure accepts a caller-supplied bot definition, while executeFunction exposes native Node.js fetch without validateHttpReqUrl. A crafted server-side code block therefore reaches cloud metadata or private network services and returns response data through chat output.

The record

CVE
CVE-2026-33712
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Typebot
Product
Typebot
Classifications
CWE-918, CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.16.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Typebot · Typebotversion=< 3.16.0

Published CVSS scores

10.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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