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CVE-2026-53756 (GCVE-0-2026-53756)

Vulnerability from cvelistv5 – Published: 2026-09-04 17:46 – Updated: 2026-09-04 17:46
VLAI
Title
Emlog Blind SQL Injection via Authentication Cookie
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.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
emlog emlog Affected: < 2.6.16
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
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      "affected": [
        {
          "product": "emlog",
          "vendor": "emlog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.16"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-89",
              "description": "CWE-89: Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T17:46:58.174Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg"
        },
        {
          "name": "https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4"
        },
        {
          "name": "https://github.com/emlog/emlog/releases/tag/pro-2.6.16",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/emlog/emlog/releases/tag/pro-2.6.16"
        }
      ],
      "source": {
        "advisory": "GHSA-xq97-53c2-vvfg",
        "discovery": "UNKNOWN"
      },
      "title": "Emlog Blind SQL Injection via Authentication Cookie"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-53756",
    "datePublished": "2026-09-04T17:46:58.174Z",
    "dateReserved": "2026-06-10T17:48:40.546Z",
    "dateUpdated": "2026-09-04T17:46:58.174Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53756",
      "date": "2026-06-14",
      "epss": "0.00032",
      "percentile": "0.09863"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53756\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-04T18:17:52.350\",\"lastModified\":\"2026-09-04T18:17:52.350\",\"vulnStatus\":\"Received\",\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"emlog\",\"product\":\"emlog\",\"versions\":[{\"version\":\"\u003c 2.6.16\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":4.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-89\"}]}],\"references\":[{\"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\":\"security-advisories@github.com\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.