FKIE_CVE-2026-53756

Vulnerability from fkie_nvd - Published: 2026-09-04 18:17 - Updated: 2026-09-08 21:05
Severity
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4
security-advisories@github.comhttps://github.com/emlog/emlog/releases/tag/pro-2.6.16
security-advisories@github.comhttps://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "emlog",
          "vendor": "emlog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.16"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 \u2014 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",
  "lastModified": "2026-09-08T21:05:26.920",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53756",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T17:42:05.509814Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-04T18:17:52.350",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/emlog/emlog/releases/tag/pro-2.6.16"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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