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CVE-2026-104001

5.4 · MEDIUM

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 s…

Published Oct 16, 2026CWE-94EPSS 0.23%

Overview

CVE-2026-104001 is a medium-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/elightup/slim-seo/pull/296Refplugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Data.php#L76Refplugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L168Refplugins.trac.wordpress.org/browser/slim-seo/tags/4.11.0/src/MetaTags/Helper.php#L26Refplugins.trac.wordpress.org/changeset?reponame=&new=3742833%40slim-seo%2Ftags%2F4.11.2&old=3717070%40slim-seo%2Ftags%2F4.11.0Refwww.wordfence.com/threat-intel/vulnerabilities/id/7a7c53b9-e9b6-4337-9c89-326e66c4bd27?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-104001?

CVE-2026-104001 is a medium-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-104001?

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-104001?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-104001?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-104001 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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