---
id: CVE-2026-104001
title: >-
  Slim SEO <= 4.11.1 - Authenticated (Subscriber+) Arbitrary Shortcode Execution
  via 'Biographical Info' User Meta
summary: >-
  The The Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated plugin for
  WordPress is vulnerable to arbitrary shortcode execution in all versions up
  to, and including, 4.11.1 This is due to the software allowing users to
  execute an act…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-94
vendor: rilwis
product: 'Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated'
affected:
  - slim_seo_ai_seo_plugin_lightweight_fast_automated <= 4.11.1
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T05:30:23.705Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-104001'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/7a7c53b9-e9b6-4337-9c89-326e66c4bd27?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L26
  - url: >-
      https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Data.php#L76
  - url: >-
      https://plugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L168
  - url: 'https://github.com/elightup/slim-seo/pull/296'
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3742833%40slim-seo%2Ftags%2F4.11.2&old=3717070%40slim-seo%2Ftags%2F4.11.0
tags:
  - cve.org
ingestedAt: '2026-10-16T06:00:00.391Z'
---

## Overview

The The Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.11.1 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes. A Subscriber-level user need only save the shortcode payload to their own Biographical Info field via the REST API or wp-admin profile page; the shortcode then executes on any unauthenticated front-end request that resolves that author's description, such as requests using the ?author= query parameter when auto_redirection is disabled.

## Affected

- `slim_seo_ai_seo_plugin_lightweight_fast_automated <= 4.11.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.