{"id":"CVE-2026-93754","published":"2026-11-07T03:17:08.410","lastModified":"2026-11-08T19:17:43.467","description":"The payever – WooCommerce Gateway plugin for WordPress is vulnerable to arbitrary file upload leading to remote code execution in various versions up to, and including, 4.8.0. Three WooCommerce-API callbacks (payever_set_sandbox_api_keys, payever_toggle_subscription, payever_synchronization_incoming) are registered with no authentication, capability check, or nonce, and the upload_image() routine writes a remotely fetched file to the public uploads directory using an attacker-controlled basename() BEFORE validating the file type. This makes it possible for unauthenticated attackers to write an executable PHP file and achieve remote code execution. NOTE: the token-recovery leg of the full chain depends on the plugin's outbound validateToken() call to Payever's service; the unauthenticated hard-coded-credential identity overwrite (CWE-862/CWE-798) is independently exploitable.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-434"],"vendors":[],"products":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/class-payever-log-manager.php?rev=3647773#L35","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L116","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L22","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/class-payever-synchronization.php?rev=3647773#L683","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/logger/class-payever-logger.php?rev=3647773#L18","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/synchronization/actions/class-payever-action-update-product.php?rev=3647773#L448","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/synchronization/actions/class-payever-action-update-product.php?rev=3647773#L547","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/synchronization/management/class-payever-import-manager.php?rev=3647773#L21","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/includes/synchronization/management/class-payever-subscription-manager.php?rev=3647773#L79","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/vendor/payever/core-sdk-php/lib/Payever/Core/Http/Client/CurlClient.php?rev=3647773#L258","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/payever-woocommerce-gateway/trunk/woocommerce-payever-gateway.php?rev=3647773#L145","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3761918%40payever-woocommerce-gateway&new=3761918%40payever-woocommerce-gateway","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/03412063-d73a-4c5c-8dc6-3e76a5d975a5?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The payever WooCommerce Gateway plugin allows unauthenticated remote code execution because three API callbacks lack authentication and capability checks, and an upload_image() function writes attacker-controlled files to the public uploads directory before validating file type, enabling arbitrary PHP file upload.","exploitability":"Exploitation is straightforward for unauthenticated attackers since no authentication, capability, or nonce protection is required on the vulnerable endpoints.","blast_radius":"Successful exploitation grants full remote code execution with the privileges of the web server, enabling complete compromise of confidentiality, integrity, and availability of the affected WordPress site.","remediation":"Upgrade to payever – WooCommerce Gateway version 4.8.1 or later, which addresses the vulnerability by adding authentication, capability checks, nonce validation, and proper file type validation before writing files to the uploads directory.","detection":"Look for POST requests to /wp-json/wc/v3/payever/* endpoints (or similar REST routes) from unauthenticated sources that include file upload parameters, especially with .php extensions or suspicious content types, and monitor the wp-content/uploads directory for newly created PHP files with unusual names or timestamps coinciding with such requests.","tags":["rce","auth-bypass","file-upload","web","wordpress"],"model":"garnet-coder","analyzedAt":"2026-11-07T09:55:28.362Z"}}