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CVE-2026-85267

Cross-Site WebSocket Hijacking in Google Cloud Shell

HIGH
8.7
CVSS Score
Published: October 20, 2026 at 09:16 AM UTC
Updated: October 20, 2026 at 07:18 PM UTC
1 product affected across 1 vendorCloud Shell

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Severity
HIGH8.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://docs.cloud.google.com/shell/docs/release-notes#July_28_2026

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGoogleCloud
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-1385

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