{
 "id": "WPSEC-2026-1062",
 "url": "https://wpsec.com/vuln/WPSEC-2026-1062/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-1062/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-1062/index.md",
 "title": "Formidable Forms <= 6.35 - Authenticated (Custom-Access+) Missing Authorization to Arbitrary Plugin Installation via Account Connection Token",
 "description": "The Formidable Forms plugin for WordPress is vulnerable to unauthorized plugin installation via the account connection token and the /frm-admin/v1/install-addon REST route in all versions up to, and including, 6.35. This is due to two flaws working together. First, the connect link that contains the frm_connect_token secret is printed to any user who can open the Formidable dashboard or settings pages, with no check for the activate_plugins or install_plugins capability. Second, the REST route's permission callback only compares that token, and the add-on download URL check accepts any URL that begins with the plugin's S3 bucket name without a trailing slash, as well as paths containing dot segments. This makes it possible for authenticated attackers who have been given access to Formidable Forms (the frm_view_forms capability, which an administrator can grant to any role, including Subscriber) to install and activate a plugin downloaded from a storage location they control, which can lead to remote code execution.",
 "plugin": {
  "slug": "formidable",
  "name": "Formidable Forms",
  "full_name": "Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More",
  "wordpress_org": "https://wordpress.org/plugins/formidable/",
  "advisories_url": "https://wpsec.com/vuln/plugin/formidable/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/formidable"
 },
 "type": "NO AUTHORISATION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 7.5,
  "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "severity": "High"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "7.0",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 7.0"
  ]
 },
 "introduced_in": null,
 "fixed_in": "7.0",
 "remediation": "Update to 7.0 or later.",
 "fix_released": "2026-10-14T16:54:36+00:00",
 "published": "2026-10-16T11:46:25+00:00",
 "updated": "2026-10-16T10:55:58.191034+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-1062/",
  "https://plugins.svn.wordpress.org/formidable/tags/7.0/",
  "https://wordpress.org/plugins/formidable/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/formidable",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "High",
  "affected_versions": "High",
  "as_of": "2026-10-16"
 }
}