Themify Builder <= 7.7.7 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Stylesheet Write/Delete via tb_generate_on_fly AJAX Action

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-15407",
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "dateUpdated": "2026-07-16T07:51:04.964Z",
    "dateReserved": "2026-07-10T13:54:17.109Z",
    "datePublished": "2026-07-16T07:51:04.964Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence",
        "dateUpdated": "2026-07-16T07:51:04.964Z"
      },
      "title": "Themify Builder <= 7.7.7 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Stylesheet Write/Delete via tb_generate_on_fly AJAX Action",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.7.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite or delete the generated CSS stylesheet file of arbitrary posts, including private and draft posts owned by other users, and modify plugin-scoped font options. The required CSRF nonce (tf_nonce) is emitted on public front-end builder pages via wp_localize_script, making it trivially obtainable by any authenticated user visiting such a page."
        }
      ],
      "affected": [
        {
          "vendor": "themifyme",
          "product": "Themify Builder",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "7.7.7"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-862 Missing Authorization",
              "cweId": "CWE-862",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b59e2773-31f0-4c19-b066-30982761bc44?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.5/classes/class-themify-builder-stylesheet.php#L160"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.7/classes/class-themify-builder-stylesheet.php#L160"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.7/classes/class-themify-builder-stylesheet.php#L17"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.7/classes/class-themify-builder-stylesheet.php#L313"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.7/classes/class-themify-builder-stylesheet.php#L69"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.5/classes/class-themify-builder-stylesheet.php#L17"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.5/classes/class-themify-builder-stylesheet.php#L313"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.5/classes/class-themify-builder-stylesheet.php#L69"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3607906%40themify-builder&new=3607906%40themify-builder"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "timeline": [
        {
          "time": "2026-07-10T14:09:39.000Z",
          "lang": "en",
          "value": "Vendor Notified"
        },
        {
          "time": "2026-07-15T00:00:00.000Z",
          "lang": "en",
          "value": "Disclosed"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "PRISM",
          "type": "finder"
        }
      ]
    }
  }
}