---
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: 0.15788
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-19T13:17:52.631463Z'
ingestedAt: '2026-09-19T09:00:39.471Z'
---

## Overview

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 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.