{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "emlog",
          "vendor": "emlog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 2.6.26"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Emlog is an open source website building system. In 2.6.26 and earlier, install.php accepts action=reinstall without authentication and deliberately skips the already-installed check because the guard runs only when $act != \u0027reinstall\u0027. A remote attacker can submit hostname, dbuser, dbpasswd, dbname, dbprefix, username, password, and email values to cause file_put_contents(\u0027config.php\u0027, $config) to overwrite the configuration with attacker-controlled database settings and create a new administrator account. No fixed version is available as of this review."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-14T17:37:20.232Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/emlog/emlog/security/advisories/GHSA-v5qq-p8mp-3gxm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/emlog/emlog/security/advisories/GHSA-v5qq-p8mp-3gxm"
        }
      ],
      "source": {
        "advisory": "GHSA-v5qq-p8mp-3gxm",
        "discovery": "UNKNOWN"
      },
      "title": "emlog allows unauthenticated reinstallation via `install.php?action=reinstall`."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-73849",
    "datePublished": "2026-08-14T17:37:20.232Z",
    "dateReserved": "2026-08-13T17:44:28.644Z",
    "dateUpdated": "2026-08-14T17:37:20.232Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-73849\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-14T18:19:09.987\",\"lastModified\":\"2026-08-14T18:19:09.987\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Emlog is an open source website building system. In 2.6.26 and earlier, install.php accepts action=reinstall without authentication and deliberately skips the already-installed check because the guard runs only when $act != \u0027reinstall\u0027. A remote attacker can submit hostname, dbuser, dbpasswd, dbname, dbprefix, username, password, and email values to cause file_put_contents(\u0027config.php\u0027, $config) to overwrite the configuration with attacker-controlled database settings and create a new administrator account. No fixed version is available as of this review.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"emlog\",\"product\":\"emlog\",\"versions\":[{\"version\":\"\u003c= 2.6.26\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-306\"}]}],\"references\":[{\"url\":\"https://github.com/emlog/emlog/security/advisories/GHSA-v5qq-p8mp-3gxm\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}