Arbitrary Code Execution in Gemini CLI via Symlinked Environment Variables (CVE-2026-13745) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-13745

Arbitrary Code Execution in Gemini CLI via Symlinked Environment Variables

Answer in brief

CVE-2026-13745 records a Unknown severity vulnerability in Arbitrary Code Execution in Gemini CLI via Symlinked Environment Variables. The current sources do not mark it as known exploited. The current feed maps Google Cloud/Gemini CLI (generic), Google Cloud/run-gemini-cli GitHub Action (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 10, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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/Gemini CLI (generic), Google Cloud/run-gemini-cli GitHub Action (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Google Cloud/Gemini CLIgeneric	>=0 <0.39.1	0.39.1
Google Cloud/run-gemini-cli GitHub Actiongeneric	>=0 <0.1.22	0.1.22

Recommended response

Check inventory. Check lockfiles and deployed manifests for Google Cloud/Gemini CLI, Google Cloud/run-gemini-cli GitHub Action.
Review the reported fix. Update Google Cloud/Gemini CLI to 0.39.1; Google Cloud/run-gemini-cli GitHub Action to 0.1.22 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

A vulnerability in the Gemini CLI and associated GitHub Action allowed an unprivileged attacker to achieve an arbitrary code execution in Gemini CLI via untrusted local .env files overriding GEMINI_CLI_HOME.

Quoted source text, attributed separately from HOL analysis.