CVE-2025-30634 in WP Featured Content Slider Plugin
Summary
by MITRE • 06/06/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in IWEBIX WP Featured Content Slider allows Stored XSS. This issue affects WP Featured Content Slider: from n/a through 2.6.
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Analysis
by VulDB Data Team • 06/06/2025
The CVE-2025-30634 vulnerability represents a critical cross-site scripting flaw within the IWEBIX WP Featured Content Slider plugin for WordPress systems. This security weakness enables attackers to inject malicious scripts into web pages that are then executed by unsuspecting users, creating a persistent threat vector that can compromise user sessions and data integrity. The vulnerability specifically manifests as a stored XSS attack, meaning that malicious payloads are permanently stored on the server and subsequently delivered to users when they access affected pages. This classification places the vulnerability within the purview of CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that directly enables XSS attacks. The affected plugin version range extends from an unspecified starting point through version 2.6, indicating that any installation within this scope is potentially vulnerable to exploitation.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the plugin's content handling mechanisms. When administrators or users input data through the slider configuration interface, the plugin fails to properly sanitize or escape special characters that could be interpreted as HTML or JavaScript code. This deficiency allows malicious actors to embed script tags, event handlers, or other malicious code within the slider content that gets stored in the database and subsequently rendered in web pages without proper security filtering. The stored nature of this vulnerability means that the malicious code persists across multiple user sessions and page views, amplifying its impact and making it particularly dangerous for high-traffic websites. Attackers can leverage this vulnerability to steal user cookies, session tokens, or other sensitive information, potentially leading to complete account takeover scenarios that align with ATT&CK technique T1531 - Account Access Removal or T1566 - Phishing.
The operational impact of CVE-2025-30634 extends beyond simple script execution, as it can facilitate more sophisticated attacks within the compromised environment. An attacker who successfully exploits this vulnerability can redirect users to malicious sites, inject malicious advertisements, or manipulate the content displayed to users in ways that compromise the integrity of the website. This threat is particularly concerning for websites that rely heavily on user-generated content or administrative interfaces, as the vulnerability can be exploited through various attack vectors including administrator accounts, user submissions, or even automated attacks targeting the plugin's configuration endpoints. The vulnerability's presence in the WordPress ecosystem means that it affects not just individual websites but potentially thousands of installations that have not yet patched the issue, creating a widespread security concern that aligns with ATT&CK technique T1190 - Exploit Public-Facing Application, which describes how attackers target vulnerabilities in web applications to gain unauthorized access to systems.
Organizations should immediately implement multiple layers of mitigation to address this vulnerability while awaiting official patches from the plugin developers. The primary defense mechanism involves comprehensive input sanitization and output encoding of all user-provided content, ensuring that any potentially malicious scripts are neutralized before being stored or rendered. Security teams should also implement Content Security Policy headers that restrict script execution and prevent unauthorized code injection attempts. Additionally, administrators should conduct immediate vulnerability scans to identify any existing malicious payloads within the affected plugin installations and implement network monitoring to detect suspicious activities related to the exploitation of this vulnerability. The remediation process should include updating to the latest available version of the WP Featured Content Slider plugin, applying any security patches provided by the vendor, and implementing proper access controls to limit the scope of potential exploitation. Given the stored nature of the vulnerability, regular security audits of plugin configurations and user-generated content should be conducted to ensure that no malicious code has been injected into the system.