# Gemini CLI: Remote Code Execution via workspace trust and tool allowlisting bypasses

Advisory record · `GHSA-wpqr-6v78-jr5g`

- **Identifiers:** `GHSA-wpqr-6v78-jr5g` · `CVE-2026-12537`
- **State:** Confirmed
- **Severity:** CVSS 10.0 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html) · [CWE-77](https://cwe.mitre.org/data/definitions/77.html) · [CWE-78](https://cwe.mitre.org/data/definitions/78.html) · [CWE-200](https://cwe.mitre.org/data/definitions/200.html)
- **Tags:** [Command injection](https://agentprime.io/advisories/tag/command-injection.md) · [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md)
- **Published:** 24 Apr 2026
- **Updated:** 25 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 Apr 2026, 19:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 10.0: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `@google/gemini-cli` (npm): affected `<0.39.1 || >=0.40.0-preview.2, <0.40.0-preview.3`; fixed in `0.39.1`, `0.40.0-preview.3`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 10.0 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear`, from CNA (GoogleCloud)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 11th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 24 Apr 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-wpqr-6v78-jr5g](https://github.com/advisories/GHSA-wpqr-6v78-jr5g)
- [OSV: GHSA-wpqr-6v78-jr5g](https://osv.dev/vulnerability/GHSA-wpqr-6v78-jr5g)
- <https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-12537>
- <https://github.com/google-github-actions/run-gemini-cli>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-wpqr-6v78-jr5g>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-wpqr-6v78-jr5g/>. Everything for agents: <https://agentprime.io/llms.txt>.