High · CVSS 8.3CVE-2026-85299

Missing Authorization in Compute Engine allows Cross-Project Disk ExfiltrationCVE-2026-85299

Answer in brief

CVE-2026-85299 records a High severity (CVSS 8.3) vulnerability in Missing Authorization in Compute Engine allows Cross-Project Disk Exfiltration. The current sources do not mark it as known exploited. The current feed maps Google Cloud/Compute Engine (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 27, 2026Updated Oct 27, 2026Source checked Oct 27, 2026First seen by HOL Oct 27, 2026Material review Oct 27, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.3. 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/Compute Engine (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Google Cloud/Compute Enginegeneric	>=0 <2026-08-31	2026-08-31

Recommended response

Check inventory. Check lockfiles and deployed manifests for Google Cloud/Compute Engine.
Review the reported fix. Update Google Cloud/Compute Engine to 2026-08-31 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 27, 2026

Sources and claim methodology

Source referencedocs.cloud.google.com

Upstream source description

A Missing Authorization vulnerability in the disks.createSnapshot and regionDisks.createSnapshot APIs in Google Compute Engine versions prior to 2026-08-31 on Google Cloud Platform allows an authenticated attacker to exfiltrate cross-project disk data. This vulnerability was patched on 31 August 2026, and no customer action is needed.

Quoted source text, attributed separately from HOL analysis.