{
 "id": "WPSEC-2026-2377",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2377/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2377/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2377/index.md",
 "title": "WP User Merger <= 1.6.5 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Display Name",
 "description": "The WP User Merger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a user's display name on the plugin's merge page in all versions up to, and including, 1.6.5 due to insufficient output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject web scripts into their profile that execute if an administrator selects that user for a merge and performs a further action on the page.",
 "plugin": {
  "slug": "wp-user-merger",
  "name": "WP User Merger",
  "full_name": "WP User Merger",
  "wordpress_org": "https://wordpress.org/plugins/wp-user-merger/",
  "advisories_url": "https://wpsec.com/vuln/plugin/wp-user-merger/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/wp-user-merger"
 },
 "type": "XSS",
 "cwe": [
  "CWE-79"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 5.4,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "1.6.6",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 1.6.6"
  ]
 },
 "introduced_in": null,
 "fixed_in": "1.6.6",
 "remediation": "Update to 1.6.6 or later.",
 "fix_released": "2026-10-30T23:37:36+00:00",
 "published": "2026-11-03T14:48:33+00:00",
 "updated": "2026-11-03T13:41:06.560014+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2377/",
  "https://plugins.svn.wordpress.org/wp-user-merger/tags/1.6.6/",
  "https://wordpress.org/plugins/wp-user-merger/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/wp-user-merger",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "None seen",
  "as_of": "2026-11-03"
 }
}