{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Ninja Forms \u2013 Contact Form Builder with Calculators, Quizzes, Signatures \u0026 AI Form Builder",
          "vendor": "kstover",
          "versions": [
            {
              "lessThanOrEqual": "3.15.5",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Iron StrongMan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The The Ninja Forms \u2013 Contact Form Builder with Calculators, Quizzes, Signatures \u0026 AI Form Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.15.5 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes. Exploitation requires that an administrator has configured at least one Ninja Forms field with its Default Value set to the {wp:user_display_name} merge tag on a publicly accessible page; a Subscriber need only set their display_name to a shortcode string via their profile and then visit that page."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94 Improper Control of Generation of Code",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-31T05:33:05.826Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/05dccb32-e638-4929-a788-3998bc3acd75?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/MergeTags/WP.php#L189"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Display/Render.php#L278"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Display/Render.php#L268"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Config/MergeTagsWP.php#L128"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Abstracts/MergeTags.php#L94"
        },
        {
          "url": "https://wordpress.org/plugins/ninja-forms/"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3749135/ninja-forms/trunk/includes/Display/Render.php"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-28T14:11:24.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-30T17:25:29.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Ninja Forms \u003c= 3.15.5 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via \u0027{wp:user_display_name}\u0027 Merge Tag via display_name"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-101326",
    "datePublished": "2026-10-31T05:33:05.826Z",
    "dateReserved": "2026-09-28T13:56:19.395Z",
    "dateUpdated": "2026-10-31T05:33:05.826Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}