{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.0.18"
              },
              {
                "fixed": "3.0.9"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "1c2b7e410551affac4e26d1b67646a2e51bd43da"
            },
            {
              "fixed": "7ddb3dc015d1440e8a0fb0bbafa2df9aaaa2669d"
            }
          ],
          "repo": "https://github.com/sysown/proxysql",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-58ww-865x-grpr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48773.json"
  },
  "details": "ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. Versions 2.0.18 through 3.0.8 have a pre-authentication heap memory corruption vulnerability in the MySQL and PostgreSQL protocol first-read paths. A remote unauthenticated client can declare an oversized first packet length, and ProxySQL passes that attacker-controlled length directly to `recv()` while writing into a fixed 32 KB input queue. Version 3.0.9 patches the issue.",
  "id": "CVE-2026-48773",
  "modified": "2026-07-08T05:38:12.810432987Z",
  "published": "2026-06-19T19:27:12.183Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sysown/proxysql/releases/tag/v3.0.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48773.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/sysown/proxysql/security/advisories/GHSA-58ww-865x-grpr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48773"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ProxySQL pre-auth heap overflow in MySQL and PostgreSQL first-packet handling"
}