{"id":"CVE-2026-17553","state":"PUBLISHED","title":"Shopping Cart & eCommerce Store <= 5.9.3 - Authenticated (Store Manager+) Privilege Escalation to ec_ajax_save_page_default_options AJAX Action","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.","publishedAt":"2026-09-09T03:28:45.820Z","updatedAt":"2026-09-09T13:13:26.504Z","severity":{"score":7.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","source":"Wordfence"},"assigner":"Wordfence","products":["levelfourstorefront Shopping Cart & eCommerce Store"],"affected":[{"vendor":"levelfourstorefront","product":"Shopping Cart & eCommerce Store","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.9.3","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/08e62276-f004-48ca-bb00-2f81e6ac4892?source=cve","https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7110","https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7107","https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7103","https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/admin/inc/wp_easycart_admin.php#L209","https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/design/layout/base-responsive-v3/ec_product_page.php#L415","https://plugins.trac.wordpress.org/changeset?reponame=&old=3681924%40wp-easycart&new=3681924%40wp-easycart"],"weaknesses":["CWE-269"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/17xxx/CVE-2026-17553.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-17553","state":"PUBLISHED","datePublished":"2026-09-09T03:28:45.820Z","dateUpdated":"2026-09-09T13:13:26.504Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-07-27T12:44:14.951Z"},"containers":{"cna":{"title":"Shopping Cart & eCommerce Store <= 5.9.3 - Authenticated (Store Manager+) Privilege Escalation to ec_ajax_save_page_default_options AJAX Action","descriptions":[{"lang":"en","value":"The WP EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. 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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":[{"vendor":"levelfourstorefront","product":"Shopping Cart & eCommerce Store","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.9.3","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/08e62276-f004-48ca-bb00-2f81e6ac4892?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7110"},{"url":"https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7107"},{"url":"https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/wpeasycart.php#L7103"},{"url":"https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/admin/inc/wp_easycart_admin.php#L209"},{"url":"https://plugins.trac.wordpress.org/browser/wp-easycart/tags/5.9.1/design/layout/base-responsive-v3/ec_product_page.php#L415"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3681924%40wp-easycart&new=3681924%40wp-easycart"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","baseScore":7.2,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269 Improper Privilege Management","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-09-09T03:28:45.820Z"},"credits":[{"lang":"en","type":"finder","value":"Wordfence PRISM"}],"timeline":[{"time":"2026-08-27T21:38:37.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-09-08T14:56:09.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-09T13:13:11.443033Z","id":"CVE-2026-17553","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-09T13:13:26.504Z"}}]}}}