CVE-2025-48357 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Theme Century Century ToolKit product, affecting versions up to 1.2.1. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a malicious request to a web application without their consent. This can lead to unauthorized actions being performed on behalf of the user. In this case, the vulnerability allows an attacker to exploit the lack of proper anti-CSRF protections in Century ToolKit, potentially causing users to unknowingly execute unwanted commands or changes within the application. The CVSS 3.1 base score of 5.4 indicates a medium severity level, with the vector string AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N meaning the attack can be performed remotely over the network with low attack complexity, no privileges required, but requires user interaction (such as clicking a link). The impact affects confidentiality and integrity to a limited extent, with no direct availability impact. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is classified under CWE-352, which is a common web application security weakness related to insufficient request validation against CSRF attacks.

For European organizations using the Century ToolKit, this vulnerability could allow attackers to perform unauthorized actions by leveraging authenticated user sessions. Although the impact on confidentiality and integrity is limited, attackers could manipulate user settings, change configurations, or perform other actions permitted by the compromised user’s privileges. This could lead to unauthorized data exposure or modification, potentially affecting business operations or data privacy compliance. Since the vulnerability requires user interaction, phishing or social engineering campaigns could be used to exploit it. European organizations subject to strict data protection regulations such as GDPR must be cautious, as any unauthorized data manipulation or exposure could result in regulatory penalties and reputational damage. The lack of known exploits reduces immediate risk, but the medium severity and ease of exploitation warrant proactive mitigation.

Organizations should implement specific mitigations beyond generic advice: 1) Apply any available patches or updates from Theme Century as soon as they are released. 2) If patches are not yet available, implement web application firewall (WAF) rules to detect and block suspicious CSRF attack patterns targeting Century ToolKit endpoints. 3) Enforce strict anti-CSRF tokens in all state-changing requests within the application to ensure requests originate from legitimate users. 4) Educate users about the risks of clicking unsolicited links or performing actions from untrusted sources to reduce the risk of social engineering exploitation. 5) Conduct regular security assessments and penetration testing focusing on CSRF and session management controls within Century ToolKit deployments. 6) Monitor logs for unusual user activity that could indicate exploitation attempts. 7) Limit user privileges to the minimum necessary to reduce potential impact if exploitation occurs.