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Back to active CVEs
High · CVSS 8.7CVE-2026-85267

Cross-Site WebSocket Hijacking in Google Cloud ShellCVE-2026-85267

Answer in brief

CVE-2026-85267 records a High severity (CVSS 8.7) vulnerability in Cross-Site WebSocket Hijacking in Google Cloud Shell. The current sources do not mark it as known exploited. The current feed maps Google Cloud/Cloud Shell (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 20, 2026Updated Oct 20, 2026Source checked Oct 25, 2026First seen by HOL Oct 20, 2026Material review Oct 20, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Google Cloud/Cloud Shell (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Google Cloud/Cloud Shellgeneric>=0 <2026-07-222026-07-22

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Google Cloud/Cloud Shell.
  2. 2Review the reported fix. Update Google Cloud/Cloud Shell to 2026-07-22 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 20, 2026

Sources and claim methodology

  • Source referencedocs.cloud.google.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-1385
Source
CVE List V5
Source checked
Oct 25, 2026
References
1 linked source
Open source record