CVE-2026-42427

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

State: Published
Severity: 5.8 Medium
Published: Apr 28, 2026
Updated: Apr 29, 2026
Reserved: Apr 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.8 Medium	CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.3 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N	VulnCheck

Weaknesses

CWE-184 Incomplete List of Disallowed Inputs

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.4.8Affected 2026.4.8Not affected

References

GitHub Security Advisory (GHSA-7437-7hg8-frrw)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: OpenClaw < 2026.4.8 - Remote Code Execution via Build Tool Environment Variable Injectionthird-party-advisory

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