CVE-2025-23810 identifies a security vulnerability in the Len Slider plugin, a tool commonly used to create image sliders on websites. The vulnerability is primarily a Cross-Site Request Forgery (CSRF) flaw, which allows attackers to trick authenticated users into submitting unwanted actions to the web application without their consent. This occurs because the plugin lacks proper anti-CSRF tokens or mechanisms to verify the legitimacy of requests. In addition to CSRF, the vulnerability also enables reflected Cross-Site Scripting (XSS), where malicious scripts can be injected and executed in the victim's browser when they visit a crafted URL or page. The combination of CSRF and reflected XSS can be exploited to hijack user sessions, steal sensitive information, or perform unauthorized administrative actions. The affected versions include all releases up to 2.0.11. No patches or fixes have been published at the time of disclosure, and no known exploits have been detected in the wild. The vulnerability was assigned by Patchstack and published in January 2025. The absence of a CVSS score necessitates an independent severity assessment. The attack vector is remote, does not require user interaction beyond visiting a malicious link, and does not require authentication, increasing the risk. The plugin’s widespread use in WordPress sites globally amplifies the potential impact.

The impact of CVE-2025-23810 is significant for organizations using the Len Slider plugin on their websites. Successful exploitation can lead to unauthorized actions performed in the context of authenticated users, including administrators, potentially resulting in website defacement, data leakage, or unauthorized configuration changes. The reflected XSS component can facilitate session hijacking, credential theft, or distribution of malware to site visitors. This undermines the confidentiality, integrity, and availability of affected web applications. For e-commerce, financial, or sensitive data portals, such exploitation could lead to financial loss, reputational damage, and regulatory penalties. The lack of authentication requirements and ease of exploitation increase the likelihood of automated attacks and widespread abuse. Organizations relying on Len Slider for critical website functionality face elevated risk, especially if they have not implemented compensating controls such as WAFs or strict content security policies.

1. Immediately disable or remove the Len Slider plugin from all affected systems until a security patch is released by the vendor. 2. Monitor official channels for updates or patches from Igor Sazonov or trusted security advisories and apply them promptly once available. 3. Implement Web Application Firewall (WAF) rules specifically designed to detect and block CSRF and reflected XSS attack patterns targeting Len Slider endpoints. 4. Enforce strict input validation and output encoding on all user-supplied data to prevent script injection. 5. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 6. Educate users and administrators about the risks of clicking on suspicious links and encourage the use of multi-factor authentication to reduce session hijacking risks. 7. Conduct regular security audits and penetration testing focusing on web application vulnerabilities, including CSRF and XSS. 8. Consider alternative, actively maintained slider plugins with robust security track records if Len Slider is critical to business operations.