LoopX serve-status permissive CORS policy exposes control-plane state and private Markdown files

{
  "id": "3245a1db24050f83f889f865081d2ed08e16ed9bbc89159d7e641e6e7a0bb7c0",
  "url": "https://osv.dev/vulnerability/CVE-2026-108372",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LoopX serve-status permissive CORS policy exposes control-plane state and private Markdown files",
    "summary": "Open and provider-neutral, LoopX is a lightweight state kernel and local-first control plane for loop engineering. From version 0.0.1 until 0.4.5, `loopx serve-status` in `loopx/status_server.py` uses `StatusRequestHandler._send_json()` and `do_OPTIONS()` to send `Access-Control-Allow-Origin: *` for unauthenticated responses on predictable loopback ports. A remote attacker can cause an operator who visits attacker-controlled web content to issue cross-origin requests to `GET /status.json`, `GET /review-material?goal_id=...&path=...`, `GET /`, and `POST /control-plane/configure-goal/dry-run`, exposing control-plane state, goal and run information, local absolute paths, private Markdown files below registered goal roots, and dry-run configuration projections. The affected routes do not provide cross-origin writes or arbitrary-file access. This issue is fixed in version 0.4.5.",
    "evidence": "osv:CVE-2026-108372",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-108372",
      "aliases": [
        "CVE-2026-108372",
        "GHSA-vx2m-gpq4-8j5q"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/loopx-project/loopx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "80877982216577174e3e7c7cca9804c5a3a3148b"
                },
                {
                  "fixed": "838720fba42bd22f71b5bb763ec406f7bdf4c940"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.0.1"
                      },
                      {
                        "fixed": "0.4.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "838720fba42bd22f71b5bb763ec406f7bdf4c940"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "80877982216577174e3e7c7cca9804c5a3a3148b"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.4.5"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.4.4",
            "v0.4.3",
            "v0.4.1",
            "v0.4.0",
            "v0.3.0",
            "v0.2.13",
            "v0.2.12",
            "v0.2.11",
            "v0.2.10",
            "v0.2.9",
            "v0.2.8",
            "v0.2.5",
            "v0.2.4",
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0",
            "v0.1.16",
            "v0.1.15",
            "v0.1.14",
            "v0.1.13",
            "v0.1.12",
            "v0.1.11",
            "v0.1.10",
            "v0.1.9",
            "v0.1.8",
            "v0.1.7",
            "v0.1.6",
            "v0.1.5",
            "v0.1.4",
            "v0.1.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108372.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.752917711Z",
      "provider": "osv",
      "references": [
        "https://github.com/loopx-project/loopx/releases/tag/v0.4.5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108372.json",
        "https://github.com/loopx-project/loopx/security/advisories/GHSA-vx2m-gpq4-8j5q",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108372",
        "https://github.com/loopx-project/loopx/commit/838720fba42bd22f71b5bb763ec406f7bdf4c940",
        "https://github.com/loopx-project/loopx/pull/3137"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-346",
          "CWE-942"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108372.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108372",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507307,
  "published_at": "2026-10-16T21:29:13.757+00:00"
}