{
 "id": "WPSEC-2026-3064",
 "url": "https://wpsec.com/vuln/WPSEC-2026-3064/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-3064/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-3064/index.md",
 "title": "WPChat <= 1.4.5 - Unauthenticated Missing Authorization to API Access Token Update",
 "description": "The WPChat plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 1.4.5 due to a missing capability check and nonce verification on the handleAccessToken function. The function is hooked to admin_init, which also runs for unauthenticated requests to admin-post.php. This makes it possible for unauthenticated attackers to overwrite the site's WPChat Smart Search API access token with a value of their choosing, or to do the same by tricking an administrator into clicking a crafted link.",
 "plugin": {
  "slug": "smashballoon-wpchat-livechat-customer-support",
  "name": "WPChat",
  "full_name": "WPChat – Live Chat & Messaging Widget for Customer Support",
  "wordpress_org": "https://wordpress.org/plugins/smashballoon-wpchat-livechat-customer-support/",
  "advisories_url": "https://wpsec.com/vuln/plugin/smashballoon-wpchat-livechat-customer-support/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/smashballoon-wpchat-livechat-customer-support"
 },
 "type": "NO AUTHORISATION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 5.3,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "1.4.6",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 1.4.6"
  ]
 },
 "introduced_in": null,
 "fixed_in": "1.4.6",
 "remediation": "Update to 1.4.6 or later.",
 "fix_released": "2026-11-12T13:24:14+00:00",
 "published": "2026-11-13T13:41:21+00:00",
 "updated": "2026-11-12T17:16:09.523494+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-3064/",
  "https://plugins.svn.wordpress.org/smashballoon-wpchat-livechat-customer-support/tags/1.4.6/",
  "https://wordpress.org/plugins/smashballoon-wpchat-livechat-customer-support/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/smashballoon-wpchat-livechat-customer-support",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-11-13"
 }
}