Vulnerability · Published Feb 20, 2026 · Assigned by GoogleCloud
CVE-2026-2473Bucket Squatting in Vertex AI Experiments leads to RCE and Model Theft.
High 7.7
In plain English
A high-severity security flaw in Vertex AI Experiments from Google Cloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Predictable bucket naming in Vertex AI Experiments in Google Cloud Vertex AI from version 1.21.0 up to (but not including) 1.133.0 on Google Cloud Platform allows an unauthenticated remote attacker to achieve cross-tenant remote code execution, model theft, and poisoning via pre-creating predictably named Cloud Storage buckets (Bucket Squatting). This vulnerability was patched and no customer action is needed.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | google-cloud-aiplatform | 1.133.0 | GHSA-wh2j-26j7-9728 |
| PyPI | google-cloud-aiplatform | 1.133.0 | PYSEC-2026-2500 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Google Cloud | Vertex AI Experiments | 1.21.0 – before 1.133.0 |
Weakness: CWE-340 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Clear