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CVE-2026-48494— TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids

Quick assessment

Affected
baptisteArno typebot.io
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Baptiste Arnaud Typebot是Baptiste Arnaud个人开发者的一个可视化聊天机器人构建平台。 Baptiste Arnaud Typebot 3.16.1版本存在授权问题漏洞，该漏洞源于授权验证不当，允许具有读取权限的已认证用户通过混合授权的typebotId和blockId以及外部预览电话号码，恢复属于其他typebot的WhatsApp预览webhook会话，导致攻击者能够向另一个工作区的WhatsApp预览会话注入任意webhook JSON并推进其草稿/未发布流程。

CVSS 7.1 · High EPSS 0.46% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
baptisteArno typebot.io = 3.16.1 affected
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I. Basic Information for CVE-2026-48494

Vulnerability Information
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Vulnerability Title
TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids
Source: CVE Program / CVE List V5
Vulnerability Description
TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign preview phone number tied to another preview session. The WhatsApp test-webhook handler authorizes the parent typebot first, but then resolves the preview chat session only by `wa-preview-{phone}`. As a result, an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot. Version 3.17.0 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Baptiste Arnaud Typebot 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Baptiste Arnaud Typebot是Baptiste Arnaud个人开发者的一个可视化聊天机器人构建平台。 Baptiste Arnaud Typebot 3.16.1版本存在授权问题漏洞，该漏洞源于授权验证不当，允许具有读取权限的已认证用户通过混合授权的typebotId和blockId以及外部预览电话号码，恢复属于其他typebot的WhatsApp预览webhook会话，导致攻击者能够向另一个工作区的WhatsApp预览会话注入任意webhook JSON并推进其草稿/未发布流程。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
baptisteArno typebot.io = 3.16.1 -

II. Public POCs for CVE-2026-48494

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III. Intelligence Information for CVE-2026-48494

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Patches & Fixes for CVE-2026-48494 (2)

Vendor Advisories for CVE-2026-48494 (1)

Vendor Pages for CVE-2026-48494 (1)

Same Patch Batch · baptisteArno · 2026-08-11 · 12 CVEs total

CVE-2026-48765 9.9 CRITICAL TypeBot vulnerable to cross-workspace OAuth credential takeover in updateOAuthCredentials
CVE-2026-47705 9.6 CRITICAL TypeBot vulnerable to CSV injection in result export
CVE-2026-47702 9.1 CRITICAL TypeBot API tokens stored in plaintext
CVE-2026-48763 8.2 HIGH TypeBot has Arbitrary S3 Object Write in deprecated public upload endpoint via attacker-co
CVE-2026-48766 7.6 HIGH TypeBot vulnerable to OpenAI API key exfiltration in listModels via attacker-controlled ba
CVE-2026-48767 7.6 HIGH Google Sheets OAuth access token disclosure to guest members via getAccessToken
CVE-2026-42142 7.1 HIGH TypeBot has Authorization Bypass in Google Sheets `getSheets` Endpoint that Allows Cross-W
CVE-2026-48495 7.1 HIGH TypeBot Google Sheets OAuth callback can create credentials in unauthorized workspaces and
CVE-2026-47704 7.1 HIGH TypeBot vulnerable to cross-typebot webhook resume via unchecked `resultId` lineage allows
CVE-2026-48483 5.4 MEDIUM TypeBot's WhatsApp status forwarding uses unvalidated user-controlled URLs, allowing SSRF
CVE-2026-48762 5.4 MEDIUM TypeBot Vulnerable to Server-Side Request Forgery (SSRF) in OpenAI Transcription Handler

IV. Related Vulnerabilities

Same product: typebot.io
Same vendor: baptisteArno
Same weakness: CWE-639

V. Comments for CVE-2026-48494

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