---
id: "CVE-2026-85299"
kind: "vulnerability"
aliases: ["CVE-2026-85299"]
title: "Google Compute Engine: disk snapshot API lets attackers copy cross-project disk data"
severity: "high"
cvss: 8.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["compute-engine", "google-cloud", "vendor"]
not_affected_if: ["patched-by-vendor"]
published_at: "2026-10-27T10:16:56+00:00"
first_seen_at: "2026-10-27T10:31:03+00:00"
updated_at: "2026-10-27T10:31:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85299", "first_seen_at": "2026-10-27T10:31:03+00:00"}]
---

# Google Compute Engine: disk snapshot API lets attackers copy cross-project disk data

The disks.createSnapshot and regionDisks.createSnapshot APIs in Google Compute Engine lacked an authorization check. An authenticated attacker can use them to export disk data belonging to other Google Cloud projects.

_Summary, check and fix written by a model from the sources; labelled as such._

## Fix

- Google patched this on 31 August 2026 and says no customer action is needed.

## Timeline

- 2026-10-27T10:31:03+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-85299

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_