{"id":"CVE-2026-1305","aliases":["EUVD-2026-9018","GHSA-rm76-fcj7-6cxh"],"status":"published","title":"Japanized for WooCommerce \u003c= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation","description":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as \"Processing\" or \"Completed\" without actual payment via a crafted POST request to the Paidy webhook endpoint.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00463,"percentile":0.40608,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-02-27T09:23:43Z","modified":"2026-06-17T10:15:29Z","products":[{"vendor":"shoheitanaka","product":"japanized for woocommerce"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/8cef4b2b-ae8d-4e18-b763-6960a0b944f7?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/woocommerce-for-japan/trunk/includes/gateways/paidy/class-wc-paidy-endpoint.php#L63"},{"url":"https://plugins.trac.wordpress.org/browser/woocommerce-for-japan/trunk/includes/gateways/paidy/class-wc-paidy-endpoint.php#L108"},{"url":"https://plugins.trac.wordpress.org/browser/woocommerce-for-japan/tags/2.8.2/includes/gateways/paidy/class-wc-paidy-endpoint.php#L108"},{"url":"https://plugins.trac.wordpress.org/browser/woocommerce-for-japan/tags/2.8.2/includes/gateways/paidy/class-wc-paidy-endpoint.php#L63"},{"url":"https://plugins.trac.wordpress.org/changeset/3464868/woocommerce-for-japan/trunk/includes/gateways/paidy/class-wc-paidy-endpoint.php"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1305"},{"url":"https://github.com/advisories/GHSA-rm76-fcj7-6cxh"}],"sources":{"cve":[{"id":"CVE-2026-1305","title":"Japanized for WooCommerce \u003c= 2.8.4 - Missing Authorization to Unauthenticated Paidy Order Manipulation","description":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as \"Processing\" or \"Completed\" without actual payment via a crafted POST request to the Paidy webhook endpoint.","status":"published","published":"2026-02-27T09:23:43.326Z","modified":"2026-04-08T17:06:07.194Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:20:01.271368Z"}],"euvd":[{"id":"EUVD-2026-9018","description":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as \"Processing\" or \"Completed\" without actual payment via a crafted POST request to the Paidy webhook endpoint.","status":"published","published":"2026-02-27T09:23:43Z","modified":"2026-04-08T17:06:07Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:49.853218Z"}],"ghsa":[{"id":"GHSA-rm76-fcj7-6cxh","title":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in...","description":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as \"Processing\" or \"Completed\" without actual payment via a crafted POST request to the Paidy webhook endpoint.","status":"published","published":"2026-02-27T12:31:25Z","modified":"2026-02-27T12:31:31Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:06:24.663603Z"}],"nvd":[{"id":"CVE-2026-1305","description":"The Japanized for WooCommerce plugin for WordPress is vulnerable to Improper Authentication in versions up to, and including, 2.8.4. This is due to a flawed permission check in the `paidy_webhook_permission_check` function that unconditionally returns `true` when the webhook signature header is omitted. This makes it possible for unauthenticated attackers to bypass payment verification and fraudulently mark orders as \"Processing\" or \"Completed\" without actual payment via a crafted POST request to the Paidy webhook endpoint.","status":"published","published":"2026-02-27T10:16:21.863Z","modified":"2026-06-17T10:15:29.193Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:07.420927Z"}]}}