{
 "id": "WPSEC-2026-2419",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2419/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2419/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2419/index.md",
 "title": "Advanced Custom Fields (ACF®) <= 6.8.10 - Authenticated (Contributor+) Missing Authorization to Bidirectional Relationship Modification",
 "description": "The Advanced Custom Fields (ACF®) plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 6.8.10 due to a missing capability check when bidirectional relationship fields sync references. The plugin wrote back-references onto target posts, users and terms without checking whether the current user could edit or assign them. This makes it possible for authenticated attackers with contributor-level access and above to modify relational field values stored on posts, terms and users they are not allowed to edit.",
 "plugin": {
  "slug": "advanced-custom-fields",
  "name": "Advanced Custom Fields (ACF®)",
  "full_name": "Advanced Custom Fields (ACF®)",
  "wordpress_org": "https://wordpress.org/plugins/advanced-custom-fields/",
  "advisories_url": "https://wpsec.com/vuln/plugin/advanced-custom-fields/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/advanced-custom-fields"
 },
 "type": "NO AUTHORISATION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 4.3,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": "6.2.0",
    "from_inclusive": true,
    "to": "6.8.11",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 6.2.0 before 6.8.11"
  ]
 },
 "introduced_in": "6.2.0",
 "fixed_in": "6.8.11",
 "remediation": "Update to 6.8.11 or later.",
 "fix_released": "2026-11-02T17:41:51+00:00",
 "published": "2026-11-03T17:48:37+00:00",
 "updated": "2026-11-03T13:19:17.736344+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2419/",
  "https://plugins.svn.wordpress.org/advanced-custom-fields/tags/6.8.11/",
  "https://wordpress.org/plugins/advanced-custom-fields/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/advanced-custom-fields",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-11-03"
 }
}