GHSA-H4H4-H3CX-X6XC

Vulnerability from github – Published: 2026-07-01 09:30 – Updated: 2026-07-01 09:30
VLAI
Details

The Slim SEO – A Fast & Automated SEO Plugin For WordPress plugin for WordPress is vulnerable to Unauthorized Private Content Disclosure in all versions up to, and including, 4.9.8 via the /wp-json/slim-seo/meta-tags/ai REST API endpoint. This is due to the endpoint's permission_callback performing only a top-level edit_posts capability check without verifying that the requesting user has read access to the specific post supplied via the object.ID parameter, allowing the generate function to pass the attacker-controlled post ID to Data::get_post_content(), which calls get_post() regardless of post status or ownership. This makes it possible for authenticated attackers with Contributor-level access and above to retrieve AI-generated summaries of the raw post_content of arbitrary posts they are not authorized to view — including private posts, drafts, pending, future, and password-protected content authored by other users — with the substance of the protected content disclosed via the HTTP response.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-12408"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-01T08:16:20Z",
    "severity": "MODERATE"
  },
  "details": "The Slim SEO \u2013 A Fast \u0026 Automated SEO Plugin For WordPress plugin for WordPress is vulnerable to Unauthorized Private Content Disclosure in all versions up to, and including, 4.9.8 via the `/wp-json/slim-seo/meta-tags/ai` REST API endpoint. This is due to the endpoint\u0027s `permission_callback` performing only a top-level `edit_posts` capability check without verifying that the requesting user has read access to the specific post supplied via the `object.ID` parameter, allowing the `generate` function to pass the attacker-controlled post ID to `Data::get_post_content()`, which calls `get_post()` regardless of post status or ownership. This makes it possible for authenticated attackers with Contributor-level access and above to retrieve AI-generated summaries of the raw `post_content` of arbitrary posts they are not authorized to view \u2014 including private posts, drafts, pending, future, and password-protected content authored by other users \u2014 with the substance of the protected content disclosed via the HTTP response.",
  "id": "GHSA-h4h4-h3cx-x6xc",
  "modified": "2026-07-01T09:30:25Z",
  "published": "2026-07-01T09:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12408"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/AI.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/AI.php#L55"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.5/src/MetaTags/Data.php#L117"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/AI.php#L21"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/AI.php#L55"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.9.8/src/MetaTags/Data.php#L117"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3576523%40slim-seo\u0026new=3576523%40slim-seo\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6e6603a0-8f35-49fb-a517-ba6344538c4d?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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