CVE-2026-48767
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
TypeBot before version 3.17.0 allows a low-privilege guest member of a workspace to obtain a live Google Sheets OAuth access token for that workspace by calling the Google Sheets helper `getAccessToken`. The vulnerable path checks only whether the caller has read access to the workspace, decrypts the stored Google OAuth credential, refreshes or retrieves the access token, and returns the raw bearer token directly to the caller. Guests can also enumerate credential identifiers, allowing them to mint and reuse the workspace's Google access token outside Typebot.
Risk Assessment
The attack can lead to unauthorized access to Google Sheets data of the workspace, potentially compromising data confidentiality and enabling further attacks.
Recommendation
Update TypeBot to version 3.17.0 or later and restrict guest permissions in the workspace.
Original NVD description (English source)
TypeBot is a chatbot builder tool. Versions prior to 3.17.0 allow a low-privilege guest member of a workspace to obtain a live Google Sheets OAuth access token for that workspace by calling the Google Sheets helper `getAccessToken`. The vulnerable path checks only whether the caller has read access to the workspace, decrypts the stored Google OAuth credential, refreshes or retrieves the access token through the Google client, and returns the raw bearer token directly to the caller. Because guest members can also enumerate credential identifiers, a guest can mint and reuse the workspace's Google access token outside Typebot. Version 3.17.0 patches the issue.