CVE-2026-85267 Google Cloud Platform Cloud Shell - Cross-Site Request Forgery

Google Cloud Platform Cloud Shell < 2026-07-22 contains a cross-site WebSocket hijacking vulnerability caused by insufficient origin validation in WebSocket requests, letting unauthenticated attackers hijack active sessions and exfiltrate OAuth tokens, exploit requires victim to have an active Cloud Shell session.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Cross-Site Request Forgery
Impact
Information Disclosure
CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear
Published
20 October 2026
Updated
20 October 2026
Weakness
CWE-1385

Vendor fix

Update to version 2026-07-22 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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