Description
The Motors – Car Dealership & Classified Listings plugin for WordPress is vulnerable to Payment Bypass via insecure user meta update in all versions up to, and including, 1.4.103 This is due to the stm_save_user_extra_fields() function updating sensitive user meta fields from POST data without verifying that the current user should have permission to modify those fields. The function hooks into the 'personal_options_update' action and only checks current_user_can('edit_user', $user_id), which passes for any user editing their own profile. This makes it possible for authenticated attackers, with Subscriber-level access and above, to set their stm_payment_status to 'completed', bypassing the PayPal payment verification and gaining access to paid Dealer membership features without completing any transaction.
References6
- plugins.trac.wordpress.org/browser/motors-car-dealership-classi…
- plugins.trac.wordpress.org/browser/motors-car-dealership-classi…
- plugins.trac.wordpress.org/browser/motors-car-dealership-classi…
- plugins.trac.wordpress.org/changeset/3468174/motors-car-dealers…
- plugins.trac.wordpress.org/changeset?old_path=%2Fmotors-car-dea…
- www.wordfence.com/threat-intel/vulnerabilities/id/34062e9a-48c2…
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 13 · as of 14 November 2026
- CWE
- CWE-862
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.