{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "0.0.70"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "2155057f4153a1e3a7b789d104f7fa96e92964e5"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "28bb2901e4dea128ac493f67ee9478d230b7a3d7"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "0.0.70",
                "range": [
                  {
                    "fixed": "b67e9efb6623385125347b2610e422d18f1c82fa"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b67e9efb6623385125347b2610e422d18f1c82fa"
            },
            {
              "fixed": "2155057f4153a1e3a7b789d104f7fa96e92964e5"
            },
            {
              "fixed": "28bb2901e4dea128ac493f67ee9478d230b7a3d7"
            }
          ],
          "repo": "https://github.com/heymrun/heym",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hcv7-mg77-pg73"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-269",
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67543.json"
  },
  "details": "Heym builds and runs agentic systems and business-process automations on self-hosted infrastructure. Prior to version 0.0.70, heym hardens one untrusted-code path but not its sibling. The Python tool executor (python_tool_executor.py) treats user code as untrusted and mandates a Docker sandbox (no network, read-only fs, non-root, no docker socket), failing closed. The skill executor (skill_python_executor.py) runs skill Python via a local backend subprocess with no Docker isolation — only a 512 MB RLIMIT and a 7-key env denylist — so a skill executes inside the backend execution context, with filesystem access, network egress, and non-denylisted environment variables that should not be exposed to untrusted/shared skills. In the shipped Docker config (backend runs as root + /var/run/docker.sock mounted), this escalates to host root. This issue has been patched in version 0.0.70.",
  "id": "CVE-2026-67543",
  "modified": "2026-11-12T10:31:02.217763848Z",
  "published": "2026-11-11T21:39:53.192Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67543.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/heymrun/heym/commit/2155057f4153a1e3a7b789d104f7fa96e92964e5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/heymrun/heym/commit/28bb2901e4dea128ac493f67ee9478d230b7a3d7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/heymrun/heym/releases/tag/0.0.70"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/heymrun/heym/security/advisories/GHSA-hcv7-mg77-pg73"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67543"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Heym Unsandboxed skill code execution: skills run via a local backend subprocess without the Docker isolation that Python tools mandate"
}