CVE-2025-48146 is a high-severity vulnerability classified as CWE-352, indicating a Cross-Site Request Forgery (CSRF) issue in the Michael Lups SEO Flow plugin by LupsOnline, affecting versions up to 2.2.0. The vulnerability allows an attacker to perform unauthorized actions on behalf of an authenticated user by exploiting the lack of proper CSRF protections. This CSRF flaw is compounded by the presence of a Stored Cross-Site Scripting (XSS) vulnerability, which means that malicious scripts can be injected and persist within the application. When combined, these vulnerabilities enable attackers to craft malicious requests that, when executed by an authenticated user, can lead to the injection and execution of arbitrary scripts. This can result in session hijacking, unauthorized changes to SEO settings, or other malicious activities within the affected application. The CVSS 3.1 score of 7.1 reflects the network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact on confidentiality, integrity, and availability is low to moderate but combined with the Stored XSS, it can lead to significant compromise of user sessions and data integrity. No patches or known exploits in the wild have been reported yet, but the vulnerability is publicly disclosed and should be addressed promptly.

For European organizations using the Michael Lups SEO Flow plugin, this vulnerability poses a significant risk. SEO plugins often have administrative privileges within content management systems, meaning exploitation could allow attackers to manipulate website content, redirect traffic, or inject malicious scripts that affect visitors and users. This can damage brand reputation, lead to data breaches, and potentially facilitate further attacks such as phishing or malware distribution. The Stored XSS component increases the risk of persistent attacks affecting multiple users. Given the interconnected nature of European digital infrastructure and strict data protection regulations like GDPR, exploitation could also result in regulatory penalties and loss of customer trust. Organizations relying on this plugin for SEO management should consider the risk of unauthorized changes to their web presence and the potential for broader compromise of their web environment.

1. Immediate mitigation should include disabling or removing the Michael Lups SEO Flow plugin until a vendor patch is available. 2. Implement Web Application Firewall (WAF) rules to detect and block suspicious CSRF and XSS payloads targeting the plugin endpoints. 3. Enforce strict Content Security Policy (CSP) headers to limit the execution of injected scripts. 4. Review and harden user roles and permissions to minimize the number of users with administrative access to the plugin. 5. Monitor web server and application logs for unusual POST requests or parameter tampering indicative of CSRF attempts. 6. Educate users about the risks of interacting with untrusted links or sites while authenticated to the affected systems. 7. Once a patch is released by LupsOnline, prioritize timely application of updates and verify the effectiveness of the fix through security testing. 8. Conduct regular security audits of all third-party plugins and extensions to identify and remediate similar vulnerabilities proactively.