{"id":"CVE-2026-18346","title":"The TikTok plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.4.1","summary":"The TikTok plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.4.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible fo…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-862"],"vendor":"tiktokbusinessplugin","product":"TikTok","affected":["TikTok <= 1.4.1"],"published":"2026-09-19","updated":"2026-09-21","sourceUpdated":"2026-09-21T13:33:33.387","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18346","references":[{"url":"https://plugins.trac.wordpress.org/browser/tiktok-for-business/tags/1.4.0/admin/Tt4b_Menu_Class.php#L397","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/tiktok-for-business/tags/1.4.0/admin/Tt4b_Menu_Class.php#L417","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/tiktok-for-business/tags/1.4.0/admin/tt4b_menu.php#L13","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/tiktok-for-business/tags/1.4.0/mapi/Tt4b_Mapi_Class.php#L332","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3699236%40tiktok-for-business&new=3699236%40tiktok-for-business","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/31233f4e-4cd5-497f-9e8a-c65635596241?source=cve","label":"security@wordfence.com"}],"tags":["nvd","cve.org"],"epss":0.0026,"epssPercentile":0.18069,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-19T13:17:52.631463Z"},"ingestedAt":"2026-09-19T09:00:39.471Z","slug":"CVE-2026-18346","body":"## Overview\n\nThe TikTok plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.4.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the merchant's stored TikTok integration access token in wp_options, hijacking the site's TikTok Business and product catalog integration. Successful exploitation requires the attacker to supply a valid TikTok OAuth auth_code issued for the merchant's registered TikTok app, as the plugin's token exchange must receive a message='OK' response from TikTok's API before the stored access token is overwritten.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}