{"id":"CVE-2026-1499","aliases":["EUVD-2026-5649","GHSA-r262-f4qm-hrp9"],"status":"published","title":"WP Duplicate \u003c= 1.1.8 - Authenticated (Subscriber+) Arbitrary File Upload via 'process_add_site' AJAX Action","description":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01043,"percentile":0.6434,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-02-06T08:25:25Z","modified":"2026-06-17T10:15:56Z","products":[{"vendor":"revmakx","product":"wp duplicate – wordpress migration plugin"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/11bb7190-023b-45e1-99a5-7313c489ef45?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/trunk/admin/class-local-sync-admin.php#L422"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/admin/class-local-sync-admin.php#L422"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/trunk/includes/class-local-sync-handle-server-requests.php#L389"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/includes/class-local-sync-handle-server-requests.php#L389"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/trunk/admin/class-local-sync-files-op.php#L843"},{"url":"https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/admin/class-local-sync-files-op.php#L843"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3452904%40local-sync\u0026old=3400317%40local-sync\u0026sfp_email=\u0026sfph_mail="},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1499"},{"url":"https://cwe.mitre.org/data/definitions/862.html"},{"url":"https://github.com/advisories/GHSA-r262-f4qm-hrp9"}],"sources":{"cve":[{"id":"CVE-2026-1499","title":"WP Duplicate \u003c= 1.1.8 - Authenticated (Subscriber+) Arbitrary File Upload via 'process_add_site' AJAX Action","description":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.","status":"published","published":"2026-02-06T08:25:25.712Z","modified":"2026-04-14T15:12:22.866Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:20:01.618694Z"}],"euvd":[{"id":"EUVD-2026-5649","description":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.","status":"published","published":"2026-02-06T08:25:25Z","modified":"2026-04-14T15:12:22Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:24:25.999353Z"}],"ghsa":[{"id":"GHSA-r262-f4qm-hrp9","title":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary...","description":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.","status":"published","published":"2026-02-06T09:30:29Z","modified":"2026-02-06T09:30:36Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:06:04.731011Z"}],"nvd":[{"id":"CVE-2026-1499","description":"The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.","status":"published","published":"2026-02-06T09:15:48.987Z","modified":"2026-06-17T10:15:56.96Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:05.149641Z"}]}}