CVE-2026-17553 (GCVE-0-2026-17553)
Vulnerability from cvelistv5 – Published: 2026-09-09 03:28 – Updated: 2026-09-09 13:13
VLAI
EPSS
VEX
Title
Shopping Cart & eCommerce Store <= 5.9.3 - Authenticated (Store Manager+) Privilege Escalation to ec_ajax_save_page_default_options AJAX Action
Summary
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.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:13 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
Wordfence
CNA
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| levelfourstorefront | Shopping Cart & eCommerce Store |
Affected:
0 , ≤ 5.9.3
(semver)
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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