Security advisory

{
  "id": "39f3d9b12160c0f1d3172d17347ba57e0299e79189d13b1c79692d5aeb99f689",
  "url": "https://osv.dev/vulnerability/CVE-2026-37552",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-37552",
    "summary": "Unsafe deserialization vulnerability in MixPHP Framework 2.x thru 2.2.17. The sync-invoke TCP server (Server.php:87) receives data from a TCP socket, passes it directly to Opis\\Closure\\unserialize(), then executes the result via call_user_func(). No authentication or signature verification exists on the TCP connection. An attacker with access to the localhost TCP port (server binds 127.0.0.1) can send a crafted serialized PHP closure to achieve arbitrary code execution.",
    "evidence": "osv:CVE-2026-37552",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-37552",
      "aliases": [
        "CVE-2026-37552"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mix-php/mix",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e91036a4b8a74001c4909ec2e7f4dd15e23b95aa"
                },
                {
                  "last_affected": "8b002644d46cddf1fc4f42bf134e46620e1a6450"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openmix:mix_php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.1"
                      },
                      {
                        "last_affected": "2.2.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.17",
            "v2.2.16",
            "v2.2.15",
            "v2.2.14",
            "v2.2.13",
            "v2.2.12",
            "v2.2.11",
            "v2.2.9",
            "v2.2.7",
            "v2.2.5",
            "v2.2.4",
            "v2.1.15",
            "v2.1.12",
            "v2.1.11",
            "v2.1.10",
            "v2.1.9",
            "v2.1.7",
            "v2.1.6",
            "v2.1.5",
            "v2.1.4",
            "v2.1.3",
            "v2.1.1",
            "v2.1.0",
            "v2.1.0-RC2",
            "v2.1.0-RC",
            "v2.0.7",
            "v2.0.6",
            "v2.0.5",
            "v2.0.4",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37552.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.003226178Z",
      "provider": "osv",
      "references": [
        "https://gist.github.com/sgInnora/fa46386840fe978a30d7e53c458f2975",
        "https://github.com/mix-php/mix/blob/v2.2.17/src/sync-invoke/src/Server.php",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37552.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-37552",
        "https://github.com/mix-php/mix"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37552.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-37552",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 512635,
  "published_at": "2026-05-01T00:00:00+00:00"
}