Incorrect Authorization in Application Integration allows Internal Stubby RPC Execution (CVE-2026-19759) | HOL Guard CVE

Critical · CVSS 9.4CVE-2026-19759

Incorrect Authorization in Application Integration allows Internal Stubby RPC Execution

Answer in brief

CVE-2026-19759 records a Critical severity (CVSS 9.4) vulnerability in Incorrect Authorization in Application Integration allows Internal Stubby RPC Execution. The current sources do not mark it as known exploited. The current feed maps Google Cloud/Application Integration (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 28, 2026Updated Sep 28, 2026Source checked Sep 28, 2026First seen by HOL Sep 28, 2026Material review Sep 28, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Google Cloud/Application Integration (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Google Cloud/Application Integrationgeneric	>=0 <2026-06-17	2026-06-17

Recommended response

Check inventory. Check lockfiles and deployed manifests for Google Cloud/Application Integration.
Review the reported fix. Update Google Cloud/Application Integration to 2026-06-17 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 28, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.