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CVE-2026-48495— TypeBot Google Sheets OAuth callback can create credentials in unauthorized workspaces and modify arbitrary typebots

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 3.17.0之前版本存在授权问题漏洞，该漏洞源于Google Sheets OAuth回调解码base64编码的JSON state参数并信任其中嵌入的workspaceId、typebotId、blockId和redirectUrl，且未进行加密完整性保护或授权检查，可能导致已认证用户篡改state值在其他工作区创建Google She

CVSS 7.1 · High EPSS 0.35% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
baptisteArno typebot.io < 3.17.0 affected
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I. Basic Information for CVE-2026-48495

Vulnerability Information
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Vulnerability Title
TypeBot Google Sheets OAuth callback can create credentials in unauthorized workspaces and modify arbitrary typebots
Source: CVE Program / CVE List V5
Vulnerability Description
TypeBot is a chatbot builder tool. Prior to version 3.17.0, the Google Sheets OAuth callback decodes a base64-encoded JSON `state` parameter and trusts the embedded `workspaceId`, `typebotId`, `blockId`, and `redirectUrl` without cryptographic integrity protection or authorization checks. The callback route is authenticated, but it does not verify that the authenticated user has write access to the target workspace or Typebot before creating credentials in the workspace or updating Typebot groups. An authenticated user who can obtain a valid Google OAuth `code` can alter the `state` value to create Google Sheets credentials in another workspace and, if target IDs are known, attach those credentials to a block in another Typebot. Version 3.17.0 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
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 3.17.0之前版本存在授权问题漏洞，该漏洞源于Google Sheets OAuth回调解码base64编码的JSON state参数并信任其中嵌入的workspaceId、typebotId、blockId和redirectUrl，且未进行加密完整性保护或授权检查，可能导致已认证用户篡改state值在其他工作区创建Google She
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 < 3.17.0 -

II. Public POCs for CVE-2026-48495

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III. Intelligence Information for CVE-2026-48495

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Patches & Fixes for CVE-2026-48495 (1)

Vendor Pages for CVE-2026-48495 (1)

Other References for CVE-2026-48495 (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-2026-47704 7.1 HIGH TypeBot vulnerable to cross-typebot webhook resume via unchecked `resultId` lineage allows
CVE-2026-48494 7.1 HIGH TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview
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-862

V. Comments for CVE-2026-48495

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