Vulnerability · Published Sep 9, 2026 · Assigned by Wordfence

CVE-2026-17553Shopping Cart & eCommerce Store <= 5.9.3 - Authenticated (Store Manager+) Privilege Escalation to ec_ajax_save_page_default_options AJAX Action

High 7.2

In plain English

A high-severity privilege mismanagement in Shopping Cart & eCommerce Store from levelfourstorefront. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.6%top 49.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The WP EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. This is due to the ec_ajax_save_page_default_options() AJAX handler iterating over every $_POST key and passing it directly into update_option() without any allowlist, while gating the handler only on 'manage_options' OR the plugin's custom 'wpec_manager' capability. The plugin's built-in 'wpec_store_manager' role holds 'wpec_manager' but not 'manage_options', and the required nonce is emitted on frontend product/category templates that render for any user with 'wpec_manager'. This makes it possible for authenticated attackers, with Store Manager-level access and above, to elevate their privileges to administrator by updating arbitrary WordPress options such as default_role='administrator' and users_can_register='1', then self-registering a new account that is assigned the administrator role.

Affected products (as reported)

Vendor	Product	Versions
levelfourstorefront	Shopping Cart & eCommerce Store	0 – through 5.9.3

Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

In plain English

Official description

Affected products (as reported)

References