CVE-2026-175537.2HighCWE-269

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

levelfourstorefront · Shopping Cart & eCommerce Store

Affected: levelfourstorefront Shopping Cart & eCommerce Store · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.6%probability of exploitation in the next 30 days

51st percentile

050100

Higher than 51% of scored CVEs

7.2HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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 products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

levelfourstorefront · Shopping Cart & eCommerce Storeup to and including 5.9.3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Privilege Management · Access Control
Vendor: levelfourstorefront
Published: September 2026
Band: Unlikely (under 1%), September 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-17553 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.