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TI-2026-81044 Aliases CVE-2026-85299GHSA-3v73-7mvh-2mh5

Missing authorization in Compute Engine leaks cross-project disk data

Priority LOW 36CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Google Compute Engine versions before 2026-08-31 on Google Cloud Platform are affected. A missing authorization check (CWE-862) in the disks.createSnapshot API lets an authenticated attacker with low privileges exfiltrate disk data from other projects.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00255 17th percentileScored 2026-11-07
Fix Fixed Compute Engine (Google Cloud): 2026-08-31

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleCompute Enginebefore 2026-08-312026-08-31Patch availableCNA
  • Compute Engine VendorGoogle Affected before 2026-08-31 Fixed in 2026-08-31 Patch available CNA

Remediation

Google Compute Engine 2026-08-31 contains the fix, and no customer action is needed.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA Compute Engine (Google Cloud) Fixed in 2026-08-31

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-85299
  2. 2026-10-27 Alias added: GHSA-3v73-7mvh-2mh5
  3. 2026-10-27 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed

References

Other 1

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences