{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3551",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-16T13:29:37.796953Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-16T13:42:26.444Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Custom New User Notification",
          "vendor": "rafasashi",
          "versions": [
            {
              "lessThanOrEqual": "1.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Muhammad Nur Ibnu Hubab"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Custom New User Notification plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s admin settings in all versions up to, and including, 1.2.0. This is due to insufficient input sanitization and output escaping on multiple settings fields including \u0027User Mail Subject\u0027, \u0027User From Name\u0027, \u0027User From Email\u0027, \u0027Admin Mail Subject\u0027, \u0027Admin From Name\u0027, and \u0027Admin From Email\u0027. The settings are registered via register_setting() without sanitize callbacks, and the values retrieved via get_option() are echoed directly into HTML input value attributes without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in the plugin settings page that will execute whenever a user accesses that page. This could be used in multi-site installations where administrators of subsites could target super administrators."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-16T05:29:53.185Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7a14d35d-144c-4ddd-b288-5e0e006fb165?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L46"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L46"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L52"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L52"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L59"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L59"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L84"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L84"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L90"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L90"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L97"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L97"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L132"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L132"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/custom-new-user-notification.php#L63"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/custom-new-user-notification.php#L63"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-15T16:46:28.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Custom New User Notification \u003c= 1.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via \u0027User Mail Subject\u0027 Setting"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-3551",
    "datePublished": "2026-04-16T05:29:53.185Z",
    "dateReserved": "2026-03-04T18:49:36.648Z",
    "dateUpdated": "2026-04-16T13:42:26.444Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-3551\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-16T13:29:37.796953Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-16T13:29:45.270Z\"}}], \"cna\": {\"title\": \"Custom New User Notification \u003c= 1.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via \u0027User Mail Subject\u0027 Setting\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Muhammad Nur Ibnu Hubab\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 4.4, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N\"}}], \"affected\": [{\"vendor\": \"rafasashi\", \"product\": \"Custom New User Notification\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.2.0\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-04-15T16:46:28.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/7a14d35d-144c-4ddd-b288-5e0e006fb165?source=cve\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L46\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L46\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L52\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L52\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L59\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L59\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L84\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L84\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L90\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L90\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L97\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L97\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/admin/includes.php#L132\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/admin/includes.php#L132\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/trunk/custom-new-user-notification.php#L63\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/custom-new-user-notification/tags/1.2.0/custom-new-user-notification.php#L63\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The Custom New User Notification plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s admin settings in all versions up to, and including, 1.2.0. This is due to insufficient input sanitization and output escaping on multiple settings fields including \u0027User Mail Subject\u0027, \u0027User From Name\u0027, \u0027User From Email\u0027, \u0027Admin Mail Subject\u0027, \u0027Admin From Name\u0027, and \u0027Admin From Email\u0027. The settings are registered via register_setting() without sanitize callbacks, and the values retrieved via get_option() are echoed directly into HTML input value attributes without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in the plugin settings page that will execute whenever a user accesses that page. This could be used in multi-site installations where administrators of subsites could target super administrators.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2026-04-16T05:29:53.185Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-3551\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-16T13:42:26.444Z\", \"dateReserved\": \"2026-03-04T18:49:36.648Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2026-04-16T05:29:53.185Z\", \"assignerShortName\": \"Wordfence\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}