CVE-2026-48494Public exploitNetwork attack vectorHinoki check available

Cross-tenant preview manipulation via unbound session key

Published Aug 11, 2026 · Updated Aug 11, 2026

Authorization bypass in Typebot 3.16.1 allows remote authenticated users to alter another workspace's WhatsApp preview flow. The test-webhook handler authorizes one typebot but retrieves wa-preview-{phone} globally and resumes it without binding the session to that typebot. Read access to any typebot and knowledge of a victim preview phone are required; crafted webhook JSON can advance the victim's draft flow.

CVSS severity7.1
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in Typebot 3.16.1 allows remote authenticated users to alter another workspace's WhatsApp preview flow. The test-webhook handler authorizes one typebot but retrieves wa-preview-{phone} globally and resumes it without binding the session to that typebot. Read access to any typebot and knowledge of a victim preview phone are required; crafted webhook JSON can advance the victim's draft flow.

The record

CVE
CVE-2026-48494
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Typebot
Product
Typebot
Classifications
CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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== 3.16.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Typebot · Typebotversion== 3.16.1

Published CVSS scores

7.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
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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