What’s Vulnerable › Vulnerabilities
CVE-2026-85267: Cross-Site WebSocket Hijacking in Google Cloud Shell
- Severity: high (CVSS 8.7 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-20 · updated 2026-10-20
- Weakness: CWE-1385
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.
Affected products
- Google Cloud Cloud Shell: before 2026-07-22 — fixed in 2026-07-22
How to fix
Upgrade to a fixed version: Google Cloud Cloud Shell 2026-07-22. Check the vendor advisory for mitigations.
References
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