{
 "id": "WPSEC-2026-0631",
 "url": "https://wpsec.com/vuln/WPSEC-2026-0631/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-0631/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-0631/index.md",
 "title": "Molongui Authorship <= 5.2.12 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via Byline Link Processing",
 "description": "The Molongui Authorship plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via its byline link processing in versions 4.0.0 up to, and including, 5.2.12. The plugin's front-end byline script URL-decodes the targets of matching links on the page and writes them back without validating the resulting URL protocol. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute when a user clicks the injected link.",
 "plugin": {
  "slug": "molongui-authorship",
  "name": "Molongui Authorship",
  "full_name": "Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress",
  "wordpress_org": "https://wordpress.org/plugins/molongui-authorship/",
  "advisories_url": "https://wpsec.com/vuln/plugin/molongui-authorship/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/molongui-authorship"
 },
 "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": "4.0.0",
    "from_inclusive": true,
    "to": "5.3.0",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 4.0.0 before 5.3.0"
  ]
 },
 "introduced_in": "4.0.0",
 "fixed_in": "5.3.0",
 "remediation": "Update to 5.3.0 or later.",
 "fix_released": "2026-10-07T09:39:48+00:00",
 "published": "2026-10-08T09:45:16+00:00",
 "updated": "2026-10-07T11:59:29.300847+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-0631/",
  "https://plugins.svn.wordpress.org/molongui-authorship/tags/5.3.0/",
  "https://wordpress.org/plugins/molongui-authorship/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/molongui-authorship",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-10-08"
 }
}