{
 "id": "WPSEC-2026-2780",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2780/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2780/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2780/index.md",
 "title": "Polylang <= 3.9.1 - Authenticated (Author+) Missing Authorization to Sticky Post Assignment via Post Translation",
 "description": "The Polylang plugin for WordPress is vulnerable to unauthorized modification of data via the new post translation feature in all versions up to, and including, 3.9.1, due to a missing capability check when the sticky status of a source post is copied to a newly created translation. When a user creates a translation of a sticky post, the new post is made sticky even if the user lacks the edit_others_posts capability (WordPress requires both edit_others_posts and publish_posts to make a post sticky). This makes it possible for authenticated attackers, with author-level access and above, to publish their own posts as sticky posts, which they would not normally be allowed to do.",
 "plugin": {
  "slug": "polylang",
  "name": "Polylang",
  "full_name": "Polylang",
  "wordpress_org": "https://wordpress.org/plugins/polylang/",
  "advisories_url": "https://wpsec.com/vuln/plugin/polylang/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/polylang"
 },
 "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": "1.8",
    "from_inclusive": true,
    "to": "3.9.2",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 1.8 before 3.9.2"
  ]
 },
 "introduced_in": "1.8",
 "fixed_in": "3.9.2",
 "remediation": "Update to 3.9.2 or later.",
 "fix_released": "2026-11-09T09:03:23+00:00",
 "published": "2026-11-10T09:43:43+00:00",
 "updated": "2026-11-09T23:36:01.118274+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2780/",
  "https://plugins.svn.wordpress.org/polylang/tags/3.9.2/",
  "https://wordpress.org/plugins/polylang/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/polylang",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "High",
  "affected_versions": "High",
  "as_of": "2026-11-10"
 }
}