{
 "id": "WPSEC-2026-0976",
 "url": "https://wpsec.com/vuln/WPSEC-2026-0976/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-0976/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-0976/index.md",
 "title": "SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO <= 3.1.1 - Unauthenticated Denial of Service via 'max_page' Parameter",
 "description": "The SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO plugin for WordPress is vulnerable to Denial of Service via the 'max_page' parameter of the rtrs_pagination AJAX action in all versions up to, and including, 3.1.1. This is due to the handler, which is registered for unauthenticated users, using the client-supplied page count without any upper bound when no sort order is given and passing it to paginate_links(), which loops once for every page. This makes it possible for unauthenticated attackers, using the nonce printed on any front-end page with reviews, to send requests that each keep a PHP worker busy until the execution time limit, consuming server resources and degrading site availability.",
 "plugin": {
  "slug": "review-schema",
  "name": "SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO",
  "full_name": "SchemaEngine AI – AI Schema Markup, Reviews & Rich Snippets for SEO",
  "wordpress_org": "https://wordpress.org/plugins/review-schema/",
  "advisories_url": "https://wpsec.com/vuln/plugin/review-schema/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/review-schema"
 },
 "type": "DOS",
 "cwe": [
  "CWE-400"
 ],
 "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:N/A:L",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "3.1.2",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 3.1.2"
  ]
 },
 "introduced_in": null,
 "fixed_in": "3.1.2",
 "remediation": "Update to 3.1.2 or later.",
 "fix_released": "2026-10-14T05:44:37+00:00",
 "published": "2026-10-15T05:49:52+00:00",
 "updated": "2026-10-14T19:37:27.744683+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-0976/",
  "https://plugins.svn.wordpress.org/review-schema/tags/3.1.2/",
  "https://wordpress.org/plugins/review-schema/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/review-schema",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-10-15"
 }
}