CVE-2026-2244

Severity CVSS v4.0:

HIGH

Type:

CWE-200 Information Leak / Disclosure

Publication date:

26/02/2026

Last modified:

26/02/2026

Description

A vulnerability in Google Cloud Vertex AI Workbench from 7/21/2025 to 01/30/2026 allows an attacker to exfiltrate valid Google Cloud access tokens of other users via abuse of a built-in startup script.<br /> <br /> All instances after January 30th, 2026 have been patched to protect from this vulnerability. No user action is required for this.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/U:Clear CVSS v4.0 Severity and Metrics:

Base Score: 8.40 HIGH
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/U:Clear

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): Active
Confidentiality (VC): High
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): High
Provider Urgency (U): Clear

Base Score 4.0

8.40

Severity 4.0

HIGH

References to Advisories, Solutions, and Tools

https://docs.cloud.google.com/vertex-ai/docs/workbench/release-notes#February_20_2026