# CVE-2026-42427

> Vulnerability · severity: **MEDIUM** (CVSS 5.3).

## Description

OpenClaw before 2026.4.8 contains a remote code execution vulnerability caused by missing environment variable denylist entries for HGRCPATH, CARGO_BUILD_RUSTC_WRAPPER, RUSTC_WRAPPER, and MAKEFLAGS. Attackers can inject malicious build tool environment variables to influence host exec commands and achieve arbitrary code execution.

## Key facts

- **CVE ID:** CVE-2026-42427
- **Published:** 2026-04-28
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.3
- **CWE codes:** CWE-184

## Affected products

- `openclaw:openclaw`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42427

## Citation

> AI Analytics. CVE-2026-42427. Retrieved 2026-07-19 from https://api.ai-analytics.org/cve/CVE-2026-42427. Derived from NIST NVD. Licensed CC0.

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