CVE-2026-14934 PUBLISHED

Cross-Tenant Repository Takeover via Improper Access Control in BigQuery, Dataform and Colab Enterprise

Assigner: GoogleCloud
Reserved: 07.07.2026 Published: 13.07.2026 Updated: 13.07.2026

A Missing Authorization vulnerability in the repository creation functionality in Google Cloud BigQuery, Dataform and Colab Enterprise, in the versions between October 2025 and May 10th, 2026, on Google Cloud Platform, allows an authenticated attacker to escalate privileges and perform cross-tenant repository takeover.

This vulnerability was patched on 10 May 2026, and no customer action is needed.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Google Cloud
Product	BigQuery
Versions	Default: unaffected affected from 2025-10 to 2026-05-10 (excl.)

Vendor	Google Cloud
Product	Dataform
Versions	Default: unaffected affected from 2025-10 to 2026-05-10 (excl.)

Vendor	Google Cloud
Product	Colab Enterprise
Versions	Default: unaffected affected from 2025-10 to 2026-05-10 (excl.)

Credits

Omer Amiad reporter

References

https://docs.cloud.google.com/support/bulletins#gcp-2026-047

Problem Types

CWE-862 Missing Authorization CWE

Impacts

CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs