CVE-2026-39965Public exploitNetwork attack vector

Authenticated SSRF via unvalidated redirect destinations

Published May 22, 2026 · Updated May 22, 2026

SSRF in Typebot 3.15.2 and earlier allows remote authenticated users to read internal resources through HTTP Request or Code blocks. The blocks call validateHttpReqUrl() only for the initial URL, while ky and fetch follow 302 redirects without validating each destination. A Typebot account and a bot block pointed at an attacker-controlled redirector are required; responses can expose cloud metadata credentials and private APIs.

CVSS severity7.7
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Typebot 3.15.2 and earlier allows remote authenticated users to read internal resources through HTTP Request or Code blocks. The blocks call validateHttpReqUrl() only for the initial URL, while ky and fetch follow 302 redirects without validating each destination. A Typebot account and a bot block pointed at an attacker-controlled redirector are required; responses can expose cloud metadata credentials and private APIs.

The record

CVE
CVE-2026-39965
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Typebot
Product
Typebot
Classifications
CWE-918, T1046, T1552.005
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Typebot · Typebotversion=< 3.16.0

Published CVSS scores

7.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery
T1552.005Cloud Instance Metadata API

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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