CVE-2026-96563 Motors <= 1.4.124 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'stm_f_s' Parameter
Authenticated attackers can inject arbitrary scripts via the stm_f_s parameter, leading to potential account takeover or malicious actions on behalf of other users.
- 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-2026-96563?
CVE-2026-96563 is a medium-severity cross-site scripting vulnerability in stylemix Motors – Car Dealership & Classified Listings Plugin, published on 10 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'stm_f_s' parameter in all versions up to, and including, 1.4.124 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nonce required by the stm_ajax_add_a_car AJAX handler is emitted in wp_footer on every page, making it accessible to any authenticated user and removing any practical barrier to exploitation at the Subscriber level.
Weakness: CWE-79
Which versions are affected by CVE-2026-96563?
How do I fix CVE-2026-96563?
No fix has been published for CVE-2026-96563 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-96563 being exploited?
There is no known exploitation of CVE-2026-96563 in the wild and no public exploit code.
Sources
Also known as GHSA-6g5x-r525-w37p.