CVE-2025-63016 identifies a Missing Authorization vulnerability (CWE-862) in the QuadLayers TikTok Feed WordPress plugin, versions up to 4.6.4. This vulnerability stems from improperly configured access control mechanisms within the plugin, which fail to enforce authorization checks on certain actions or API endpoints. As a result, unauthenticated remote attackers can exploit this flaw to perform unauthorized operations that impact the integrity of the affected system, such as modifying plugin settings or injecting malicious content into TikTok feeds displayed on websites. The CVSS 3.1 base score of 5.3 reflects a medium severity level, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no confidentiality impact (C:N), integrity impact (I:L), and no availability impact (A:N). This means the vulnerability can be exploited remotely without credentials or user interaction, but only affects data integrity. There are no known exploits in the wild, and no patches have been published yet. The vulnerability was reserved in late October 2025 and published at the end of 2025. The plugin is commonly used to embed TikTok content on WordPress sites, making it a popular target for attackers seeking to manipulate displayed content or settings without authorization.

For European organizations, especially those operating WordPress websites that utilize the QuadLayers TikTok Feed plugin, this vulnerability poses a risk to the integrity of their web content. Attackers exploiting this flaw could alter TikTok feed displays, potentially injecting misleading or malicious content that could damage brand reputation or misinform users. While confidentiality and availability are not directly impacted, the integrity compromise could lead to trust issues with customers and visitors. Organizations in sectors such as media, marketing, e-commerce, and entertainment that rely heavily on social media integrations are particularly vulnerable. Additionally, unauthorized modifications could be leveraged as a foothold for further attacks or to distribute malware indirectly. The lack of required authentication and user interaction increases the likelihood of exploitation if the vulnerability is weaponized. Given the plugin’s widespread use in Europe, the threat could affect a broad range of businesses and institutions.

1. Immediately audit all WordPress sites using the QuadLayers TikTok Feed plugin to identify affected versions (up to 4.6.4). 2. Temporarily disable or remove the plugin if feasible until an official patch is released. 3. Implement strict access controls at the web server and application level to restrict access to plugin endpoints and administrative functions. 4. Monitor web server logs and application logs for unusual or unauthorized requests targeting the plugin’s functionality. 5. Employ Web Application Firewalls (WAFs) with custom rules to block suspicious requests exploiting missing authorization. 6. Keep WordPress core and all plugins updated regularly, and subscribe to vendor security advisories for timely patch releases. 7. Educate site administrators about the risks of unauthorized plugin usage and the importance of least privilege principles. 8. Consider isolating or sandboxing social media feed integrations to limit potential impact. 9. After patch availability, promptly apply updates and verify the effectiveness of fixes through penetration testing or vulnerability scanning.