CVE-2025-48092 identifies a reflected Cross-site Scripting (XSS) vulnerability in the Fix Multiple Redirects plugin by jurajpuchky, affecting all versions up to and including 1.2.3. The vulnerability stems from improper neutralization of user-supplied input during web page generation, which allows attackers to craft malicious URLs that inject executable scripts into the victim's browser context. This reflected XSS does not require prior authentication, making it accessible to remote attackers who can lure users into clicking specially crafted links. The injected scripts can perform actions such as stealing session cookies, capturing keystrokes, or redirecting users to phishing or malware sites, thereby compromising confidentiality and integrity of user data. Although no public exploits have been reported yet, the vulnerability's nature and common exploitation patterns suggest a high risk once weaponized. The plugin is typically used in WordPress environments to manage URL redirects, and its widespread adoption in European organizations' websites increases the potential attack surface. The absence of a CVSS score necessitates an assessment based on the vulnerability's characteristics: reflected XSS vulnerabilities are generally easy to exploit, do not require authentication, and can affect a broad user base. The lack of patches or official fixes at the time of publication further elevates the urgency for mitigation. Organizations should monitor for suspicious URL parameters and implement defense-in-depth strategies such as input validation, output encoding, and Content Security Policies to reduce the risk of exploitation.

For European organizations, exploitation of this reflected XSS vulnerability could lead to significant risks including theft of user credentials, session hijacking, unauthorized actions performed on behalf of users, and redirection to malicious websites. This can result in data breaches, loss of customer trust, regulatory non-compliance (e.g., GDPR violations), and potential financial losses. Organizations with public-facing websites using the Fix Multiple Redirects plugin are particularly vulnerable, as attackers can target end-users without needing internal access. The impact extends to sectors with high web interaction such as e-commerce, government portals, and online services. Additionally, compromised user sessions could facilitate further lateral attacks within organizational networks. The vulnerability undermines confidentiality and integrity of user data and can disrupt availability if exploited to redirect users or inject disruptive scripts. Given the plugin's role in managing redirects, attackers might also manipulate navigation flows, exacerbating the impact on user experience and security.

1. Immediately monitor for updates or patches from the plugin developer and apply them as soon as they become available. 2. Until patches are released, implement Web Application Firewall (WAF) rules to detect and block suspicious input patterns targeting the vulnerable parameters. 3. Enforce strict input validation and output encoding on all user-supplied data involved in URL redirects to prevent script injection. 4. Deploy Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce the impact of any injected code. 5. Conduct regular security audits and penetration testing focusing on input handling and redirect logic within the web application. 6. Educate users and administrators about the risks of clicking on untrusted links and encourage reporting of suspicious activity. 7. Consider disabling or replacing the Fix Multiple Redirects plugin with a more secure alternative if immediate patching is not feasible. 8. Implement monitoring and alerting for unusual redirect patterns or spikes in error rates that may indicate exploitation attempts.