CVE-2026-2473

Bucket Squatting in Vertex AI Experiments leads to RCE and Model Theft.

State: Published
Severity: 7.7 High
Published: Feb 20, 2026
Updated: Feb 23, 2026
Reserved: Feb 13, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	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	GoogleCloud

Weaknesses

CWE-340 Generation of Predictable Numbers or Identifiers

Affected Products

Product	Versions
Vertex AI ExperimentsGoogle Cloud	1.21.0 to before 1.133.0Affected

References

https://docs.cloud.google.com/support/bulletins#gcp-2026-012

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