CVE-2025-14375 identifies a reflected Cross-Site Scripting (XSS) vulnerability in the 'RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging' WordPress plugin developed by rebelcode. This vulnerability exists due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of the 'className' parameter. An attacker can craft a malicious URL containing a payload in this parameter, which, when clicked by an unsuspecting user, causes the injected script to execute in the victim's browser context. The vulnerability affects all versions up to and including 5.0.10. Because the attack vector is reflected XSS, it requires user interaction (clicking a malicious link) but does not require authentication, making it accessible to unauthenticated attackers. The CVSS 3.1 base score is 6.1, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, user interaction needed, and impacts on confidentiality and integrity but not availability. The vulnerability could allow attackers to steal session cookies, perform actions on behalf of users, or redirect users to malicious sites, potentially leading to further compromise. No known exploits have been reported in the wild as of the publication date. The plugin is widely used in WordPress sites for content aggregation and autoblogging, making it a relevant target for attackers aiming to compromise websites or their visitors.

For European organizations, the impact of this vulnerability can be significant, particularly for those relying on WordPress sites that use the affected RSS Aggregator plugin to manage content feeds. Successful exploitation could lead to theft of user credentials or session tokens, unauthorized actions performed in the context of logged-in users, and potential phishing or malware distribution through injected scripts. This can damage organizational reputation, lead to data breaches involving user information, and disrupt trust in digital services. Public-facing websites, especially those in sectors like media, publishing, e-commerce, and government, are at higher risk due to their exposure and reliance on content aggregation. Although the vulnerability does not directly affect availability, the indirect consequences of compromised user accounts or injected malicious content can lead to service disruptions and regulatory scrutiny under GDPR if personal data is exposed or mishandled.

Organizations should prioritize updating the RSS Aggregator plugin to a patched version once released by rebelcode. Until a patch is available, administrators should implement strict input validation and output encoding on the 'className' parameter to neutralize malicious scripts. Employing Web Application Firewalls (WAFs) with rules targeting reflected XSS payloads can provide interim protection. Additionally, security teams should monitor web traffic for suspicious URLs containing unusual parameters and educate users about the risks of clicking unsolicited links. Implementing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting script execution sources. Regular security audits and vulnerability scanning of WordPress plugins are recommended to detect similar issues proactively. Finally, ensuring that user sessions have appropriate timeouts and multi-factor authentication can reduce the impact if session tokens are compromised.