CVE-2026-42427 — MEDIUM (5.3)

Q: How severe is CVE-2026-42427?

CVE-2026-42427 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-42427?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.

Vulnerability 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.

CVSS Score

5.3

MEDIUM

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 Products

Vendor	Product	Versions
Openclaw	Openclaw	< 2026.4.8

Related Weaknesses (CWE)

CWE-184

References

https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e8143Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-7437-7hg8-frrwVendor Advisory
https://www.vulncheck.com/advisories/openclaw-remote-code-execution-via-build-toThird Party Advisory

FAQ

What is CVE-2026-42427?

CVE-2026-42427 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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. A...

How severe is CVE-2026-42427?

CVE-2026-42427 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-42427?

Check the references section above for vendor advisories and patch information. Affected products include: Openclaw Openclaw.