CVE-2026-48495
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.
- Affected products
- Typebot
- Fix
- Available
- CVSS 3.1
- 7.1 HIGH
- EPSS
- 0.3% (17th percentile)
- Weakness
- CWE-862
- NVD status
- Received
- Published
- 2026-08-11
No indexed exploits for CVE-2026-48495 yet
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No exploit for CVE-2026-48495 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.