CVE-2026-3892: Arbitrary File Access in Motors Plugin
Platform
wordpress
Component
motors-car-dealership-classified-listings
Fixed in
1.4.108
CVE-2026-3892 is an arbitrary file access vulnerability discovered in the Motors – Car Dealership & Classified Listings Plugin for WordPress. This flaw allows authenticated users, even those with subscriber-level access, to delete files on the server. The vulnerability impacts versions 1.0.0 through 1.4.107, and a patch is available in version 1.4.108.
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Impact and Attack Scenarios
An attacker exploiting this vulnerability can delete critical system files, potentially leading to a complete compromise of the WordPress installation. This could include deleting configuration files, database connections, or even core WordPress files. The ability to delete arbitrary files grants significant control over the server, enabling attackers to disrupt operations, steal sensitive data, or install malicious code. While requiring authentication, the low privilege level needed (subscriber) expands the potential attack surface significantly, as many WordPress sites have numerous users with this access level.
Exploitation Context
This vulnerability was published on 2026-05-14. Currently, there are no known public exploits or active campaigns targeting this specific vulnerability. The ease of exploitation, combined with the widespread use of WordPress and the plugin, suggests it could become a target for opportunistic attackers. Monitor security advisories and threat intelligence feeds for any indications of exploitation.
Threat Intelligence
Exploit Status
CISA SSVC
CVSS Vector
What do these metrics mean?
- Attack Vector
- Network — remotely exploitable over the internet. No physical or local access required. Widest attack surface.
- Attack Complexity
- Low — no special conditions required. Attacker can exploit reliably without depending on rare configurations or timing.
- Privileges Required
- Low — any valid user account is sufficient. Basic authenticated access required.
- User Interaction
- None — attack is automatic and silent. Victim does nothing: no click, no file open.
- Scope
- Unchanged — impact is limited to the vulnerable component itself.
- Confidentiality
- None — no confidentiality impact. Attacker cannot read protected data.
- Integrity
- High — attacker can write, modify, or delete any data: databases, config files, or code.
- Availability
- High — complete crash or resource exhaustion. Full denial of service.
Affected Software
Weakness Classification (CWE)
Timeline
- Reserved
- Published
Mitigation and Workarounds
The primary mitigation is to immediately upgrade the Motors plugin to version 1.4.108 or later. If upgrading is not immediately feasible due to compatibility issues or breaking changes, consider restricting file upload permissions for users with subscriber roles. Implement a Web Application Firewall (WAF) rule to block requests containing suspicious file paths in the logo upload parameter. Regularly review user permissions and ensure the principle of least privilege is enforced. After upgrading, confirm the fix by attempting to upload a file with a deliberately invalid path and verifying that the upload fails with an appropriate error message.
How to fix
Update to version 1.4.108, or a newer patched version
Frequently asked questions
What is CVE-2026-3892 — Arbitrary File Access in Motors Plugin?
CVE-2026-3892 is a HIGH severity vulnerability in the Motors plugin for WordPress, allowing authenticated users to delete arbitrary files on the server due to insufficient file path validation during logo uploads.
Am I affected by CVE-2026-3892 in Motors Plugin?
You are affected if your WordPress site uses the Motors plugin and is running version 1.0.0 through 1.4.107. Check your plugin version immediately.
How do I fix CVE-2026-3892 in Motors Plugin?
Upgrade the Motors plugin to version 1.4.108 or later to resolve the vulnerability. If immediate upgrade is not possible, restrict file upload permissions for subscriber roles and implement WAF rules.
Is CVE-2026-3892 being actively exploited?
As of the publication date, there are no known public exploits or active campaigns targeting CVE-2026-3892, but the vulnerability's ease of exploitation makes it a potential target.
Where can I find the official Motors plugin advisory for CVE-2026-3892?
Refer to the official Motors plugin website or WordPress plugin repository for the latest advisory and update information regarding CVE-2026-3892.
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