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CVE-2026-18346— TikTok <= 1.4.1 - Missing Authorization to Unauthenticated TikTok Integration Takeover via 'auth_code' Parameter

Quick assessment

Affected
tiktokbusinessplugin TikTok
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 TikTok 插件在 1.4.1 及之前所有版本中存在授权绕过漏洞。这是由于该插件未能正确验证用户是否具有执行某项操作的权限。这使得未认证的 attackers 能够覆盖存储在 中商户的 TikTok 集成访问令牌，从而劫持该网站的 TikTok Business 和产品目录集成。成功利用此漏洞需要攻击者提供商户已注册的 TikTok 应用签发的有效 TikTok OAuth auth_code，因为插件在令牌交换过程中必须先从 TikTok API 收到 的响应，然后才会覆盖存储的访问令牌

CVSS 5.3 · Medium

Possible ATT&CK Techniques 2 AI

T1557 · Adversary-in-the-Middle T1079
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I. Basic Information for CVE-2026-18346

Vulnerability Information
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Vulnerability Title
TikTok <= 1.4.1 - Missing Authorization to Unauthenticated TikTok Integration Takeover via 'auth_code' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
tiktokbusinessplugin TikTok 0 ~ 1.4.1 -

II. Public POCs for CVE-2026-18346

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III. Intelligence Information for CVE-2026-18346

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Patches & Fixes for CVE-2026-18346 (2)

Security Blog Posts for CVE-2026-18346 (1)

Other References for CVE-2026-18346 (2)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-18346

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