CVE-2026-3259 Sensitive Data Disclosure in BigQuery via Materialized View Error Messages
An authenticated user can disclose sensitive data via crafted materialized view error messages in Google BigQuery.
- 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-2026-3259?
CVE-2026-3259 is a high-severity vulnerability in Google Cloud BigQuery, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Generation of Error Message Containing Sensitive Information vulnerability in the Materialized View Refresh mechanism in Google BigQuery on Google Cloud Platform allows an authenticated user to potentially disclose sensitive data using a crafted materialized view that triggers a runtime error during the refresh process.
This vulnerability was patched on 29 January 2026, and no customer action is needed.
Weakness: CWE-209
Which versions are affected by CVE-2026-3259?
How do I fix CVE-2026-3259?
No fix has been published for CVE-2026-3259 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3259 being exploited?
There is no known exploitation of CVE-2026-3259 in the wild and no public exploit code.
Sources
Also known as GHSA-g3wg-j2ff-prcp.