CVE-2026-18346 Details
Description
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.
A vulnerability exists in the TikTok plugin for WordPress, specifically in versions through 1.4.1, allowing for authorization bypass. The plugin fails to properly verify user authorization for certain actions, enabling unauthenticated attackers to overwrite the merchant's TikTok integration access token stored in the wp_options table. This exploitation hijacks the site's TikTok Business and product catalog integration. To successfully exploit this vulnerability, an attacker must provide a valid TikTok OAuth auth_code issued for the merchant's registered TikTok app, as the plugin requires a confirmation response from TikTok's API before the access token is updated.
Users are advised to update the TikTok for WordPress plugin to version 1.4.2 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 19, 2026CISA-ADP
Assessed Sep 19, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| TikTok | <= 1.4.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 19, 2026 | CVE Modified | CISA-ADP |
| Sep 19, 2026 | New CVE Received | [email protected] |