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CVE-2026-12435— Motors <= 1.4.111 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Meta Modification via 'stm_mark_as_sold_car' Parameter

Quick assessment

Affected
stylemix Motors – Car Dealership & Classified Listings Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

stylemix Motors – Car Dealership & Classified Listings Plugin是stylemix的WordPress插件。 stylemix Motors – Car Dealership & Classified Listings Plugin 1.4.111及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户授权，导致存在授权绕过漏洞，可能使认证攻击者（订阅者级别及以上）通过重放有效nonce将其他用户的车辆列表标记为售出。

CVSS 4.3 · Medium EPSS 0.40% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
stylemix Motors – Car Dealership & Classified Listings Plugin ≤ 1.4.111 affected
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I. Basic Information for CVE-2026-12435

Vulnerability Information
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Vulnerability Title
Motors <= 1.4.111 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Meta Modification via 'stm_mark_as_sold_car' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.4.111. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to mark or unmark any other user's car listing as sold by replaying a valid nonce harvested from their own listing against an arbitrary victim post ID, triggering a site-wide 'Sold' badge on the victim's listing and silently stripping its special_car featured post meta as a side effect. Exploitation requires the attacker to hold an active listing of their own (obtainable by a Subscriber via the plugin's add-listing form) in order to harvest a valid nonce for the 'stm_mark_as_sold_car' action, which can then be replayed against any other listing's post ID.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
stylemix Motors – Car Dealership & Classified Listings Plugin 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stylemix Motors – Car Dealership & Classified Listings Plugin是stylemix的WordPress插件。 stylemix Motors – Car Dealership & Classified Listings Plugin 1.4.111及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户授权，导致存在授权绕过漏洞，可能使认证攻击者（订阅者级别及以上）通过重放有效nonce将其他用户的车辆列表标记为售出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
stylemix Motors – Car Dealership & Classified Listings Plugin 0 ~ 1.4.111 -

II. Public POCs for CVE-2026-12435

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III. Intelligence Information for CVE-2026-12435

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Vendor Advisories for CVE-2026-12435 (1)

IV. Related Vulnerabilities

Same product: Motors – Car Dealership & Classified Listings Plugin
Same vendor: stylemix
Same weakness: CWE-862

V. Comments for CVE-2026-12435

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