CVE-2026-18346

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/09/2026

Last modified:

21/09/2026

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&#39;s stored TikTok integration access token in wp_options, hijacking the site&#39;s TikTok Business and product catalog integration. Successful exploitation requires the attacker to supply a valid TikTok OAuth auth_code issued for the merchant&#39;s registered TikTok app, as the plugin&#39;s token exchange must receive a message=&#39;OK&#39; response from TikTok&#39;s API before the stored access token is overwritten.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

CVE-2026-18346

Description

Impact

References to Advisories, Solutions, and Tools