CVE-2025-25096 identifies a stored Cross-site Scripting (XSS) vulnerability in the titusbicknell RSS in Page plugin, a WordPress plugin used to embed RSS feeds into web pages. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be stored persistently within the content served by the plugin. When a user visits a compromised page, the injected script executes in their browser context, potentially enabling attackers to steal session cookies, perform actions on behalf of the user, or deliver malicious payloads. This vulnerability affects all versions of the plugin up to and including 2.9.1. Stored XSS is particularly dangerous because the malicious code is permanently stored on the server and served to all visitors, increasing the attack surface. Although no known exploits have been reported in the wild, the lack of patches and the widespread use of WordPress make this a significant risk. The absence of a CVSS score requires an assessment based on the vulnerability characteristics: the attack does not require authentication, can be triggered by any visitor, and impacts confidentiality and integrity of user sessions. The plugin’s market penetration in WordPress sites worldwide, especially in countries with large digital publishing industries, increases the potential impact. Mitigation involves applying input validation and output encoding to sanitize RSS feed content, disabling or removing the plugin until a patch is available, and monitoring for updates from the vendor or security advisories.

The stored XSS vulnerability in the RSS in Page plugin can have severe consequences for affected organizations. Attackers can exploit this flaw to execute arbitrary JavaScript in the browsers of site visitors, leading to session hijacking, theft of sensitive information such as authentication tokens or personal data, and unauthorized actions performed on behalf of users. This can undermine user trust, damage brand reputation, and potentially lead to regulatory penalties if personal data is compromised. For organizations relying on the plugin to display external RSS feeds, the risk is amplified as attackers may inject malicious payloads through manipulated feed content. The vulnerability affects the confidentiality and integrity of user data and can also impact availability if attackers use the exploit to deliver malware or conduct phishing campaigns. Since the exploit requires no authentication and can affect any visitor, the scope is broad, especially for high-traffic websites. The absence of a patch increases exposure time, and organizations may face increased risk of targeted attacks or automated exploitation once proof-of-concept code becomes available.

Organizations should immediately audit their WordPress installations to identify the presence of the titusbicknell RSS in Page plugin, particularly versions up to 2.9.1. Until an official patch is released, it is advisable to disable or uninstall the plugin to eliminate the attack vector. If the plugin is essential, implement strict input validation and output encoding on all RSS feed content before rendering it on web pages to neutralize potentially malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Monitor security advisories from the plugin vendor and trusted vulnerability databases for updates or patches. Additionally, conduct regular security scans and penetration tests focusing on XSS vulnerabilities. Educate site administrators and developers about secure coding practices related to input handling and output sanitization. Implement web application firewalls (WAFs) with rules to detect and block XSS payloads targeting this plugin. Finally, maintain robust incident response plans to quickly address any exploitation attempts.