{
 "id": "WPSEC-2026-3127",
 "url": "https://wpsec.com/vuln/WPSEC-2026-3127/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-3127/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-3127/index.md",
 "title": "LightStart <= 2.6.25 - Authenticated (Subscriber+) Missing Authorization to Gutenberg Mode Toggle",
 "description": "The LightStart – Maintenance Mode, Coming Soon and Landing Page Builder plugin for WordPress is vulnerable to unauthorized modification of data via the wpmm_toggle_gutenberg AJAX action in all versions up to, and including, 2.6.25, due to a missing capability check in the toggle_gutenberg() function and a nonce check whose action is built from the user-supplied 'source' parameter. A nonce from any of the plugin's admin notices passes the check, and some of those notices are shown to every logged-in user. This makes it possible for authenticated attackers, with Subscriber-level access and above, to switch the plugin between its classic and Gutenberg-based maintenance page modes, changing the page shown to visitors while maintenance mode is active.",
 "plugin": {
  "slug": "wp-maintenance-mode",
  "name": "LightStart",
  "full_name": "LightStart – Maintenance Mode, Coming Soon and Landing Page Builder",
  "wordpress_org": "https://wordpress.org/plugins/wp-maintenance-mode/",
  "advisories_url": "https://wpsec.com/vuln/plugin/wp-maintenance-mode/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/wp-maintenance-mode"
 },
 "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": "2.5.0",
    "from_inclusive": true,
    "to": "2.6.26",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 2.5.0 before 2.6.26"
  ]
 },
 "introduced_in": "2.5.0",
 "fixed_in": "2.6.26",
 "remediation": "Update to 2.6.26 or later.",
 "fix_released": "2026-11-13T07:31:47+00:00",
 "published": "2026-11-14T07:44:31+00:00",
 "updated": "2026-11-13T15:53:57.559669+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-3127/",
  "https://plugins.svn.wordpress.org/wp-maintenance-mode/tags/2.6.26/",
  "https://wordpress.org/plugins/wp-maintenance-mode/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/wp-maintenance-mode",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-11-14"
 }
}