PT-2026-35805 · Openclaw · Openclaw

Boyhack · Published 2026-04-09 · Updated 2026-04-29 · CVE-2026-42427

Positive Technologies (AI Summary)

CVSS v4.0

8.6

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions OpenClaw versions prior to 2026.4.8

Description Remote code execution is possible due to missing environment variable denylist entries. Attackers can inject malicious build tool environment variables, specifically HGRCPATH, CARGO BUILD RUSTC WRAPPER, RUSTC WRAPPER, and MAKEFLAGS, to influence host exec commands and achieve arbitrary code execution.

Recommendations Update to version 2026.4.8.

Fix

RCE

Incomplete List of Disallowed Inputs

OS Command Injection

Weakness Enumeration

CWE-184

CWE-78

Related Identifiers

CVE-2026-42427

GHSA-7437-7HG8-FRRW

Affected Products

Openclaw

References · 8

• https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 · Patch
• https://github.com/openclaw/openclaw/security/advisories/GHSA-7437-7hg8-frrw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42427 · Security Note
• https://osv.dev/vulnerability/GHSA-7437-7hg8-frrw · Vendor Advisory
• https://github.com/openclaw/openclaw · Note
• https://twitter.com/VulmonFeeds/status/2049288660189622374 · Twitter Post
• https://twitter.com/CVEnew/status/2049227497154216162 · Twitter Post
• https://vulncheck.com/advisories/openclaw-remote-code-execution-via-build-tool-environment-variable-injection · Note