CVE-2026-42427

medium

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.

References

Advisories
More

https://www.vulncheck.com/advisories/openclaw-remote-code-execution-via-build-tool-environment-variable-injection

https://github.com/openclaw/openclaw/security/advisories/GHSA-7437-7hg8-frrw

https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5

Details

Source: Mitre, NVD

Published: 2026-04-28

Updated: 2026-04-30

Risk Information

CVSS v2

Base Score: 4.5

Vector: CVSS2#AV:L/AC:H/Au:S/C:P/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

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

Severity: Medium

CVSS v4

Base Score: 5.8

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00028