Skip to content
Heist/ feed
Back to feed
Medium

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

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-42427
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 18:21 UTC · Revision 1

Source evidence

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

core-osv · Original source

Published 28 Apr 2026, 18:10 UTC

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.

osv:CVE-2026-42427
Complete source record
{
  "id": "ce4921513e3307e9131dbe0028da4277e9492516ce8a529ffae9e50a0540cabc",
  "url": "https://osv.dev/vulnerability/CVE-2026-42427",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenClaw < 2026.4.8 - Remote Code Execution via Build Tool Environment Variable Injection",
    "summary": "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.",
    "evidence": "osv:CVE-2026-42427",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-42427",
      "aliases": [
        "CVE-2026-42427",
        "GHSA-7437-7hg8-frrw"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openclaw/openclaw",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "abe7b2c49da95a47fc0fc01661cec9bfed6941fc"
                },
                {
                  "fixed": "d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2026.4.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2026.4.7-1",
            "v2026.4.7",
            "v2026.4.5",
            "v2026.4.2",
            "v2026.4.1",
            "v2026.4.1-beta.1",
            "v2026.3.31",
            "v2026.3.31-beta.1",
            "v2026.3.28",
            "v2026.3.28-beta.1",
            "v2026.3.24",
            "v2026.3.24-beta.2",
            "v2026.3.24-beta.1",
            "v2026.3.23-2",
            "v2026.3.23",
            "v2026.3.23-beta.1",
            "v2026.3.22",
            "v2026.3.22-beta.1",
            "v2026.3.13-1",
            "v2026.3.13",
            "v2026.3.12",
            "v2026.3.11",
            "v2026.3.11-beta.1",
            "v2026.3.8",
            "v2026.3.8-beta.1",
            "v2026.3.7",
            "v2026.3.7-beta.1",
            "v2026.3.2-beta.1",
            "v2026.3.2",
            "v2026.3.1",
            "v2026.2.26",
            "v2026.2.26-beta.1",
            "v2026.2.25",
            "v2026.2.25-beta.1",
            "v2026.2.24",
            "v2026.2.24-beta.1",
            "v2026.2.23",
            "v2026.2.23-beta.1",
            "v2026.2.22",
            "v2026.2.22-beta.1",
            "v2026.2.21",
            "v2026.2.21-beta.1",
            "v2026.2.19-beta.1",
            "v2026.2.19",
            "v2026.2.17",
            "v2026.2.15-beta.1",
            "v2026.2.14",
            "v2026.2.13",
            "v2026.2.12",
            "v2026.2.9",
            "v2026.2.6-3",
            "v2026.2.6-2",
            "v2026.2.6-1",
            "v2026.2.6",
            "v2026.2.3",
            "v2026.2.2",
            "v2026.2.1",
            "v2026.1.30",
            "v2026.1.29",
            "v2026.1.24-1",
            "v2026.1.24",
            "v2026.1.23",
            "v2026.1.22",
            "v2026.1.21",
            "v2026.1.20",
            "v2026.1.16-2",
            "v2026.1.15",
            "v2026.1.14-1",
            "v2026.1.13",
            "v2026.1.12-2",
            "v2026.1.12",
            "v2026.1.11-3",
            "v2026.1.11-2",
            "v2026.1.11-1",
            "v2026.1.11",
            "v2026.1.10",
            "v2026.1.9",
            "v2026.1.8",
            "v2026.1.5-3",
            "v2026.1.5-2",
            "v2026.1.5-1",
            "v2026.1.5",
            "v2.0.0-beta5",
            "v2.0.0-beta4",
            "v2.0.0-beta3",
            "v2.0.0-beta2",
            "v2.0.0-beta1",
            "v1.3.0",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.4",
            "v0.1.3",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42427.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.729918225Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42427.json",
        "https://github.com/openclaw/openclaw/security/advisories/GHSA-7437-7hg8-frrw",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42427",
        "https://www.vulncheck.com/advisories/openclaw-remote-code-execution-via-build-tool-environment-variable-injection",
        "https://github.com/openclaw/openclaw/commit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-184"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42427.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42427",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 512660,
  "published_at": "2026-04-28T18:10:16.722+00:00"
}