CVE-2025-14049 is a reflected Cross-Site Scripting (XSS) vulnerability identified in the VikRentItems Flexible Rental Management System plugin for WordPress, affecting all versions up to and including 1.2.0. The vulnerability stems from improper neutralization of input during web page generation, specifically due to inadequate sanitization and escaping of the 'delto' parameter. This flaw allows unauthenticated attackers to craft malicious URLs containing JavaScript payloads that, when clicked by a victim, execute in the context of the vulnerable website. The attack vector requires no authentication but does require user interaction (clicking a malicious link). The vulnerability impacts the confidentiality and integrity of user data by potentially stealing session cookies, performing actions on behalf of the user, or redirecting users to malicious sites. The CVSS v3.1 base score is 6.1, reflecting medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed due to potential impact beyond the vulnerable component. No public exploits have been reported yet, but the vulnerability is publicly disclosed and should be considered a risk for sites using this plugin. The plugin is commonly used in rental management scenarios on WordPress, making it a target for attackers seeking to compromise customer data or site integrity.

For European organizations, this vulnerability poses a risk primarily to websites using the VikRentItems plugin for rental management services. Exploitation can lead to theft of user credentials, session hijacking, unauthorized actions performed on behalf of users, and redirection to malicious sites, undermining user trust and potentially leading to data breaches. This can damage brand reputation and result in regulatory non-compliance under GDPR due to exposure of personal data. The reflected XSS nature means attacks require social engineering to lure users into clicking malicious links, which can be distributed via email or social media. Sectors such as tourism, car rentals, equipment leasing, and other rental services prevalent in Europe could be particularly impacted. The medium severity score indicates a moderate risk, but the widespread use of WordPress and the plugin increases the potential attack surface. Additionally, the scope change in the CVSS vector suggests that the impact may extend beyond the immediate vulnerable component, affecting the broader application or user session integrity.

1. Monitor for official patches or updates from the VikRentItems plugin developers and apply them promptly once available. 2. Until a patch is released, implement web application firewall (WAF) rules to detect and block malicious payloads targeting the 'delto' parameter. 3. Employ strict input validation and output encoding on the 'delto' parameter at the application or server level to neutralize malicious scripts. 4. Educate users and staff about phishing and social engineering tactics to reduce the likelihood of clicking malicious links. 5. Conduct regular security assessments and penetration testing focusing on input validation and XSS vulnerabilities in WordPress plugins. 6. Consider isolating or disabling the vulnerable plugin if it is not critical to business operations until a fix is applied. 7. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the site. 8. Monitor logs for unusual URL parameters or suspicious user activity that may indicate exploitation attempts.