CVE-2026-85267

Cross-Site WebSocket Hijacking in Google Cloud Shell

Published Oct 20, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google Cloud
Google Cloud cloud Shell
Vendors & Products Google Cloud
Google Cloud cloud Shell
Type Values Removed Values Added
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.
Title Cross-Site WebSocket Hijacking in Google Cloud Shell
Weaknesses CWE-1385
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Clear'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GoogleCloud
Published
Updated
Oct 20, 2026, 7:06 PM
Reserved
Sep 3, 2026, 4:36 PM
Status
Awaiting Analysis
Published
Oct 20, 2026, 10:17 AM
Modified
Oct 20, 2026, 7:18 PM