CVE-2025-54718 is a reflected Cross-site Scripting (XSS) vulnerability found in the NooTheme Yogi - Health Beauty & Yoga WordPress theme, specifically affecting versions up to 2.9.2. The vulnerability stems from improper neutralization of input during web page generation, meaning that user-supplied data is not correctly sanitized or encoded before being included in the HTML output. This flaw allows attackers to craft malicious URLs or input fields that, when visited or submitted by a victim, execute arbitrary JavaScript in the context of the affected website. The CVSS 3.1 base score of 7.1 reflects the vulnerability's characteristics: it can be exploited remotely over the network (AV:N) with low attack complexity (AC:L), requires no privileges (PR:N), but does require user interaction (UI:R). The scope is changed (S:C), indicating that exploitation can affect resources beyond the vulnerable component. The impact affects confidentiality, integrity, and availability at a low level (C:L/I:L/A:L), enabling attackers to steal session cookies, perform actions on behalf of users, or redirect users to malicious sites. No known exploits are currently reported in the wild, but the vulnerability is publicly disclosed and should be considered a significant risk. The affected product is a popular WordPress theme used by health, beauty, and yoga-related websites, which often handle sensitive user data and e-commerce transactions. The lack of available patches at the time of disclosure necessitates immediate mitigation steps by administrators.

For European organizations, this vulnerability poses a substantial risk, especially for businesses operating in the health, beauty, and wellness sectors that utilize the Yogi theme. Exploitation could lead to theft of user credentials, session hijacking, defacement of websites, and redirection to phishing or malware distribution sites. This can damage brand reputation, lead to regulatory non-compliance (e.g., GDPR violations due to data leakage), and cause financial losses from fraud or downtime. Given the widespread use of WordPress in Europe and the popularity of wellness-related online services, the attack surface is considerable. Organizations that rely on online bookings, e-commerce, or user accounts are particularly vulnerable. The reflected XSS nature means attackers can leverage social engineering to trick users into clicking malicious links, increasing the likelihood of successful exploitation. The vulnerability's ability to affect confidentiality, integrity, and availability simultaneously elevates its potential impact on business operations and customer trust.

1. Immediate application of any available patches or updates from NooTheme once released is critical. 2. In the absence of patches, implement strict input validation and output encoding on all user-supplied data within the theme templates, especially in URL parameters and form inputs. 3. Deploy a Web Application Firewall (WAF) with specific rules to detect and block reflected XSS payloads targeting the Yogi theme. 4. Enable Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. 5. Conduct regular security audits and penetration testing focused on XSS vulnerabilities in the web application. 6. Educate users and staff about the risks of clicking suspicious links and phishing attempts that could exploit this vulnerability. 7. Monitor web server logs and intrusion detection systems for unusual requests or patterns indicative of XSS exploitation attempts. 8. Consider temporarily disabling or replacing the vulnerable theme if patching is delayed and risk is high. 9. Use security plugins that sanitize inputs and outputs on WordPress sites as an additional layer of defense.