CVE-2026-14934 Cross-Tenant Repository Takeover via Improper Access Control in BigQuery, Dataform and Colab Enterprise
An authenticated attacker can escalate privileges and take over repositories across tenants in Google Cloud BigQuery, Dataform, and Colab Enterprise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14934?
CVE-2026-14934 is a critical missing authorization vulnerability in Google Cloud BigQuery, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-14934?
How do I fix CVE-2026-14934?
No fix has been published for CVE-2026-14934 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-14934 being exploited?
There is no known exploitation of CVE-2026-14934 in the wild and no public exploit code.
Sources
Also known as GHSA-c9x2-6hqc-cm9v.