GCP-2026-064

In plain language

What this advisory means

A security flaw was found in Google Cloud's Application Integration where an authenticated user could misuse internal-only tasks to perform unauthorized actions within Google's internal production network with elevated privileges. This issue was fixed by Google on June 17, 2026, and customers do not need to take any action.

Technical explanation

How the issue affects the environment

An incorrect authorization vulnerability existed in the task configuration of Application Integration versions before June 17, 2026. This flaw allowed an authenticated user to invoke an internal-only task type that could execute arbitrary internal Remote Procedure Calls (RPCs) on Google's internal production network using a privileged identity. The vulnerability was patched on June 17, 2026, preventing unauthorized privileged RPC execution by authenticated users.

Operational impact

Why teams should care

If exploited, this vulnerability could allow an authenticated user to escalate privileges and execute arbitrary internal RPCs within Google’s internal network, potentially compromising system integrity and confidentiality. However, Google has patched this issue and indicates no customer action is required, minimizing the operational impact on customers.

Affected and fixed releases

Temporary risk reduction

No separate workaround was supplied in the source feed. Use the official vendor advisory before changing production controls.

Evidence and validation checklist

• Official Google Cloud Security Bulletin GCP-2026-064 dated 2026-09-28
• Description of an incorrect authorization vulnerability in Application Integration
• Patch release date of June 17, 2026
• No customer action required statement
• CVE-2026-19759 assigned to this vulnerability