What’s Vulnerable › Vulnerabilities

CVE-2026-19759: Incorrect Authorization in Application Integration allows Internal Stubby RPC Execution

• Severity: critical (CVSS 9.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-28 · updated 2026-09-29
• Weakness: CWE-863

Description

An Incorrect Authorization vulnerability in the task configuration in Google Cloud Application Integration versions prior to 2026-06-17 on Google Cloud Platform allows an authenticated Google Cloud user to execute arbitrary internal RPCs from inside Google's production network under a privileged identity using an internal-only task type. This vulnerability was patched on 17 June 2026, and no customer action is needed.

Affected products

• Google Cloud Application Integration: before 2026-06-17 — fixed in 2026-06-17

How to fix

Upgrade to a fixed version: Google Cloud Application Integration 2026-06-17. Check the vendor advisory for mitigations.

References

• https://docs.cloud.google.com/application-integration/docs/security-bulletins#gcp-2026-064
• https://docs.cloud.google.com/support/bulletins#gcp-2026-064

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