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.
Published: 2026-10-20
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
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Remediation

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Tracking

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Advisories

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History

Tue, 20 Oct 2026 12:45:00 +0000

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'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GoogleCloud

Published:

Updated: 2026-10-20T09:16:56.533Z

Reserved: 2026-09-03T16:36:10.612Z

Link: CVE-2026-85267

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-20T10:17:07.007

Modified: 2026-10-20T10:17:07.007

Link: CVE-2026-85267

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-1385

    Missing Origin Validation in WebSockets