CVE-2025-23448 in visualslider Sldier Plugin
Summary
by MITRE • 04/17/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dastan800 visualslider Sldier allows Reflected XSS. This issue affects visualslider Sldier: from n/a through 1.1.1.
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Analysis
by VulDB Data Team • 04/17/2025
The vulnerability identified as CVE-2025-23448 represents a critical cross-site scripting flaw within the dastan800 visualslider Sldier web application. This weakness falls under the broader category of improper input neutralization during web page generation, specifically manifesting as reflected cross-site scripting that can be exploited by attackers to execute malicious scripts in the context of victim users. The vulnerability impacts all versions of the visualslider Sldier plugin from the initial release through version 1.1.1, indicating a long-standing issue that has persisted across multiple iterations of the software.
The technical flaw occurs when the application fails to properly sanitize or escape user-supplied input before incorporating it into dynamically generated web pages. In reflected XSS scenarios, malicious input is immediately reflected back to the user through the web application's response without adequate filtering or encoding. This allows an attacker to inject malicious scripts that execute in the victim's browser when they view the affected page. The vulnerability typically arises from insufficient validation of parameters received through HTTP requests, particularly those passed via URL query strings, form fields, or other user-controllable inputs that are then rendered in HTML output without proper security measures.
The operational impact of this reflected XSS vulnerability is significant and multifaceted. Attackers can leverage this weakness to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or even deface the affected web pages. Since the vulnerability affects the visualslider Sldier plugin, compromised systems could allow attackers to access sensitive user data, manipulate content, or establish persistent access through session hijacking. The reflected nature of the vulnerability means that exploitation requires user interaction with a maliciously crafted link, making it particularly dangerous in phishing campaigns or when users are tricked into visiting compromised web pages. The attack vector typically involves sending a specially crafted URL to victims, which when clicked, triggers the XSS payload in the victim's browser.
Mitigation strategies for CVE-2025-23448 should focus on implementing robust input validation and output encoding practices throughout the application. The primary defense mechanism involves proper sanitization of all user inputs before they are processed or rendered in web pages, utilizing context-appropriate escaping techniques such as HTML entity encoding for web content. Organizations should immediately update to the latest version of the visualslider Sldier plugin where this vulnerability has been patched, as the vendor likely implemented proper input validation and output encoding measures. Additionally, implementing a Content Security Policy (CSP) can provide an additional layer of protection by restricting the sources from which scripts can be loaded and executed. Security headers should be configured to prevent script execution from untrusted sources, and web application firewalls can be deployed to detect and block malicious input patterns. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and corresponds to ATT&CK technique T1566.001 for initial access through spearphishing attachments or links, making it a critical concern for enterprise security posture and user protection.
This vulnerability demonstrates the importance of proper input validation in web applications and highlights how seemingly minor flaws in data handling can lead to significant security risks. The reflected XSS attack pattern represents one of the most common and dangerous web application vulnerabilities, emphasizing the need for comprehensive security testing and regular vulnerability assessments. Organizations relying on the visualslider Sldier plugin must prioritize immediate remediation to protect their users and maintain the integrity of their web applications against this persistent threat vector.