CVE-2025-9207 identifies an HTML injection vulnerability in the TI WooCommerce Wishlist plugin for WordPress, affecting all versions up to and including 2.10.0. The root cause is improper input validation (CWE-20), where the plugin accepts hidden form fields without restricting or sanitizing the input values. This flaw allows unauthenticated attackers to inject arbitrary HTML code into wishlist items, which are later rendered on the website. The vulnerability is exploitable remotely without any authentication or user interaction, increasing its attack surface. While the CVSS score is 5.3 (medium severity), the impact is primarily on data integrity, as attackers can manipulate the content displayed to users, potentially leading to phishing, defacement, or misleading information. Confidentiality and availability remain unaffected. No patches are currently linked, and no known exploits have been reported in the wild. The vulnerability affects e-commerce websites using WooCommerce with this plugin, which is popular among small to medium online retailers. The lack of input validation on hidden fields is a common security oversight that can be mitigated by implementing strict sanitization and validation routines. Detection can be enhanced by monitoring HTTP requests for suspicious payloads targeting wishlist functionality.

For European organizations, especially e-commerce businesses relying on WooCommerce and the TI WooCommerce Wishlist plugin, this vulnerability can lead to unauthorized content injection on their websites. This can degrade customer trust, cause reputational damage, and potentially facilitate phishing attacks by injecting malicious HTML or scripts disguised as legitimate content. Although it does not directly compromise sensitive data or system availability, the manipulation of displayed content can indirectly lead to financial losses through customer deception or reduced sales. The risk is heightened for online retailers with significant customer interaction via wishlists. Additionally, regulatory compliance under GDPR may be impacted if the injected content leads to data misuse or harms user privacy indirectly. The vulnerability's ease of exploitation without authentication increases the likelihood of opportunistic attacks targeting European e-commerce platforms.

European organizations should immediately audit their WordPress installations to identify the presence of the TI WooCommerce Wishlist plugin and its version. Until an official patch is released, organizations can implement input validation and sanitization at the web application firewall (WAF) level to block suspicious HTML content in wishlist-related HTTP requests, especially targeting hidden fields. Disabling or restricting the wishlist functionality temporarily can reduce exposure. Developers should update the plugin code to enforce strict validation on all input fields, including hidden ones, ensuring only expected data types and values are accepted. Regularly monitoring web logs for unusual HTML injection attempts and employing content security policies (CSP) can help mitigate the impact of injected content. Organizations should subscribe to vendor advisories for timely patch releases and test updates in staging environments before deployment. User education on recognizing phishing or suspicious content on e-commerce sites can further reduce risk.