CVE-2025-23472 in Flexo Slider Plugin
Summary
by MITRE • 03/03/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Flexo Slider allows Reflected XSS. This issue affects Flexo Slider: from n/a through 1.0013.
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Analysis
by VulDB Data Team • 03/03/2025
The CVE-2025-23472 vulnerability represents a critical cross-site scripting flaw within the NotFound Flexo Slider plugin, specifically targeting the web page generation process where input validation mechanisms fail to properly sanitize user-supplied data. This reflected cross-site scripting vulnerability enables attackers to inject malicious scripts into web pages viewed by other users, creating a significant security risk for websites utilizing this particular slider plugin. The vulnerability exists in all versions of the Flexo Slider plugin from the initial release through version 1.0013, indicating a long-standing flaw that has remained unaddressed for an extended period. The issue stems from the plugin's failure to adequately neutralize input parameters during the dynamic generation of web content, allowing malicious payloads to be executed in the context of affected users' browsers.
The technical implementation of this vulnerability occurs when the Flexo Slider plugin processes user input through reflected parameters without proper sanitization or encoding mechanisms. When a malicious user crafts a URL containing specially crafted script code within the plugin's input fields, the slider component reflects this code back to the user's browser during page rendering. This reflected XSS attack vector operates through the manipulation of URL parameters or form inputs that the plugin directly incorporates into generated HTML content without appropriate security measures. The vulnerability aligns with CWE-79, which specifically addresses the improper neutralization of input during web page generation, and represents a classic example of reflected cross-site scripting that enables attackers to execute arbitrary JavaScript code in the victim's browser context. The flaw demonstrates poor input validation practices and inadequate output encoding that violates fundamental web security principles.
The operational impact of CVE-2025-23472 extends beyond simple script execution, as it provides attackers with the capability to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious sites. An attacker could exploit this vulnerability to steal administrator credentials, modify website content, inject malicious advertisements, or redirect users to phishing sites that appear legitimate. The reflected nature of the vulnerability means that the attack requires user interaction through a crafted link, making it particularly dangerous in social engineering campaigns where users might be tricked into clicking malicious URLs. The vulnerability affects not only end users but also website administrators who could be targeted through attacks that exploit their browser sessions, potentially leading to complete compromise of the affected website. This type of vulnerability can be exploited in conjunction with other attack vectors to escalate privileges and gain unauthorized access to sensitive system resources.
Mitigation strategies for CVE-2025-23472 must include immediate remediation through plugin updates to versions that address the reflected XSS vulnerability, as well as implementing proper input validation and output encoding mechanisms. Organizations should ensure that all instances of the Flexo Slider plugin are updated to the latest secure version that includes proper sanitization of user inputs and appropriate HTML encoding of dynamic content. Security measures should include implementing Content Security Policy headers to limit script execution, deploying web application firewalls that can detect and block XSS attempts, and conducting regular security audits of web applications to identify similar vulnerabilities. The ATT&CK framework categorizes this vulnerability under T1203 - Exploitation for Client Execution, highlighting the need for comprehensive defensive measures including browser security configurations, user education, and network monitoring to detect potential exploitation attempts. Regular patch management processes should be established to ensure timely updates of all third-party plugins and components to prevent similar vulnerabilities from being exploited in the future.