CVE-2026-42427

MEDIUM 5.3

OpenClaw < 2026.4.8 - Remote Code Execution via Build Tool Environment Variable Injection

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-184
Vendor	openclaw
Product	openclaw
Published	Apr 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

None

Affected Versions

OpenClaw / OpenClaw

0 < 2026.4.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-7437-7hg8-frrw github.com: https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-remote-code-execution-via-build-tool-environment-variable-injection

Credits

🔍 boyhack (@boy-hack)