What is GHSA-342c-3cqc-4gph?

GHSA-342c-3cqc-4gph is a security advisory published by GitHub Security Advisories with High severity. A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud...

Which CVE IDs does GHSA-342c-3cqc-4gph cover?

GHSA-342c-3cqc-4gph covers the following CVE IDs: CVE-2026-85267. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-342c-3cqc-4gphHigh

A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud...

Vendor

GitHub Security Advisories

Published

October 20, 2026

Last Modified

October 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-85267 →

📋 Description

A Cross-Site WebSocket Hijacking vulnerability in Cloud Shell prior to 2026-07-22 on Google Cloud Platform allows an unauthenticated attacker to hijack an active Cloud Shell session and exfiltrate the user's OAuth access token using a cross-origin WebSocket request.

This vulnerability was patched on 22 July 2026, and no customer action is needed.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-85267
https://docs.cloud.google.com/shell/docs/release-notes#July_28_2026
https://github.com/advisories/GHSA-342c-3cqc-4gph