CVE-2026-116562

Motors <= 1.4.128 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Taxonomy Term Name via 'stm_f_s' Parameter

2026-11-06 14:12
churchill11

Strategic Overview

Status
Patched in 1.4.129
Affected Plugin
Motors – Car Dealership & Classified Listings Plugin
Affected Version
<= 1.4.128
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation
CVE
CVE-2026-116562
View all Motors – Car Dealership & Classified Listings Plugin vulnerabilities

At a glance

CVE-2026-116562 is a medium-severity Improper Neutralization of Input During Web Page Generation vulnerability in the Motors WordPress plugin, affecting versions <= 1.4.128. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.4.129; sites on affected versions should update now. Disclosed November 2026, reported by churchill11.

Vulnerability Overview

The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'stm_f_s[make]' parameter in all versions up to, and including, 1.4.128 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. This requires the Free Listing Submission feature to be enabled, which is shipped on by default via the Setup Wizard demo configuration.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation

Motors <= 1.4.128 carries this weakness at stm_f_s[make], and reaching it takes an account at Subscriber level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Motors the fix is 1.4.129: builds <= 1.4.128 are affected, anything from 1.4.129 onward is not.

Remediation

Update to version 1.4.129, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Motors 1.4.129 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-116562https://www.wordfence.com/threat-intel/vulnerabilities/id/0f11a49c-f352-4ae8-bad9-b55b2ef76353https://nvd.nist.gov/vuln/detail/CVE-2026-116562

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C