CVE-2026-104001 Slim SEO <= 4.11.1 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'Biographical Info' User Meta
Authenticated subscribers can execute arbitrary shortcodes via their profile bio, potentially leading to code execution on front-end pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104001?
CVE-2026-104001 is a medium-severity code injection vulnerability in rilwis Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-104001?
How do I fix CVE-2026-104001?
No fix has been published for CVE-2026-104001 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-104001 being exploited?
There is no known exploitation of CVE-2026-104001 in the wild and no public exploit code.
Sources
Also known as GHSA-6247-9gvr-43xh.