Vulnerability · Published Aug 11, 2026 · Assigned by GitHub_M

CVE-2026-48767Google Sheets OAuth access token disclosure to guest members via getAccessToken

High 7.6

In plain English

A high-severity information exposure in typebot.io from baptisteArno. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 62.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
baptisteArno	typebot.io	< 3.17.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

References

https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-qjpp-9cqc-jhh8 x_refsource_CONFIRM
https://github.com/baptisteArno/typebot.io/pull/2501 x_refsource_MISC
https://github.com/baptisteArno/typebot.io/commit/c0ffd825e2f4ee2256a157fd085fb624dcede625 x_refsource_MISC
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0 x_refsource_MISC