CVE-2026-42142 baptisteArno CVE debrief

Who should care

Defenders responsible for TypeBot deployments, especially those using Google Sheets OAuth credentials, should assess exposure and verify workspace membership validation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure that their deployments are secure and compliant with the latest updates.

Why it matters

CVE-2026-42142 allows authenticated users to access and decrypt another workspace's Google Sheets OAuth credentials in TypeBot versions prior to 3.17.0. Defenders should verify workspace membership validation, restrict access to credentials, and monitor for suspicious activity.

• Authenticated users may access and decrypt another workspace's Google Sheets OAuth credentials
• Spreadsheet data (sheet names, IDs, column headers) may be retrieved by unauthorized users
• Defenders should verify workspace membership validation in TypeBot deployments
• Remediation priority is high for TypeBot versions prior to 3.17.0

Technical summary

The handleGetSheets API handler in TypeBot's versions prior to 3.17.0 does not validate workspace membership, allowing any authenticated user to access and decrypt another workspace's Google Sheets OAuth credentials and retrieve spreadsheet data (sheet names, IDs, column headers). This issue has a high severity with a CVSS score of 7.1. The vulnerability allows authenticated users to access sensitive data without proper authorization. Defenders should prioritize verifying workspace membership validation in TypeBot deployments, especially for authenticated users accessing Google Sheets OAuth credentials.

Defensive priority

Defenders should prioritize verifying workspace membership validation in TypeBot deployments, especially for authenticated users accessing Google Sheets OAuth credentials.

Recommended defensive actions

• Verify workspace membership validation in TypeBot deployments
• Restrict access to Google Sheets OAuth credentials
• Monitor for suspicious activity related to authenticated user access
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in TypeBot's handleGetSheets API handler. The issue allows any authenticated user to access and decrypt another workspace's Google Sheets OAuth credentials and retrieve spreadsheet data.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.