{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.6.16"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "92b6eea618891b28ed0c520564dff26e170645b4"
            },
            {
              "fixed": "59c3a597f206ae040d1036f2ef28b4656edc548c"
            }
          ],
          "repo": "https://github.com/emlog/emlog",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xq97-53c2-vvfg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-89"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53756.json"
  },
  "details": "Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.",
  "id": "CVE-2026-53756",
  "modified": "2026-09-06T03:30:38.983365485Z",
  "published": "2026-09-04T17:46:58.174Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/emlog/emlog/releases/tag/pro-2.6.16"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53756.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53756"
    },
    {
      "type": "FIX",
      "url": "https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Emlog Blind SQL Injection via Authentication Cookie"
}