WordPress security changelog
HIGH CVE-2026-17553 Deferred

WP EasyCart lets store managers change options and create administrator accounts

WP EasyCart through 5.9.3 passes every POST key received by ec_ajax_save_page_default_options() directly to update_option() without an allowlist. Its authorization check accepts either manage_options or wpec_manager; the built-in wpec_store_manager role holds the latter, and eligible users receive the required nonce in frontend product or category templates. A Store Manager can enable registration and set the default role to administrator, then register a new administrator account.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Shopping Cart & eCommerce Store
Plugin slug
wp-easycart
Affected
<= 5.9.3
Safe version
See mitigation notes
Published
Sep 09, 2026
Weakness
CWE-269 — Improper Privilege Management

This CVE was published Sep 09, 2026 and is one of 20 known issues for this plugin.

What to do

Update, patch or deactivate.

WP EasyCart 5.9.4 is available and may resolve this issue, but the checked official changelog does not confirm a matching fix. Update and obtain vendor confirmation. If in doubt, contact Fused or your hosting vendor.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

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

References

Primary and upstream sources