CVE-2025-23682 in Preloader Quotes Plugin
Summary
by MITRE • 01/22/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Preloader Quotes allows Reflected XSS. This issue affects Preloader Quotes: from n/a through 1.0.0.
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Analysis
by VulDB Data Team • 02/09/2025
This vulnerability represents a classic cross-site scripting flaw that exploits improper input validation during web page generation processes. The issue resides within the NotFound Preloader Quotes plugin where user-supplied input is not adequately sanitized before being rendered in web pages, creating an avenue for malicious actors to inject arbitrary JavaScript code. The vulnerability specifically manifests as a reflected XSS attack, meaning that malicious scripts are reflected off the web server and executed in the victim's browser when they click on a specially crafted link. The affected version range spans from an unspecified starting point through version 1.0.0, indicating that all versions within this range are potentially compromised and susceptible to exploitation.
The technical implementation of this flaw demonstrates a failure in input sanitization and output encoding practices that are fundamental to preventing XSS attacks. When user input is directly incorporated into dynamically generated web content without proper neutralization, it creates a pathway for attackers to inject malicious payloads that can execute within the context of the victim's browser session. This type of vulnerability falls under CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a well-documented and critical security weakness in web applications. The reflected nature of the attack means that the malicious payload must be embedded in a URL or other request parameter that is then reflected back to the user, typically through error messages or search results.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to perform a wide range of malicious activities within the victim's browser context. Attackers could potentially steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or even harvest sensitive information from the targeted application. The vulnerability's presence in a preloader quotes plugin suggests that it may be exploited during page loading sequences, potentially affecting user experience while simultaneously providing a covert channel for malicious activity. This type of attack can be particularly insidious because it often requires minimal user interaction beyond clicking a malicious link, making it an attractive vector for social engineering campaigns.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms throughout the application's data flow. The most effective immediate solution involves sanitizing all user-supplied input before it is processed or displayed in web pages, utilizing established libraries and frameworks designed for XSS prevention. Implementing Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be loaded and executed. Regular security audits and code reviews should specifically target input handling routines to identify and remediate similar issues. The ATT&CK framework categorizes this type of vulnerability under T1203 - Exploitation for Client Execution, highlighting the importance of addressing these weaknesses through both defensive measures and proactive monitoring. Organizations should also implement automated vulnerability scanning tools that can detect similar input validation flaws across their entire application portfolio, as the principles behind this vulnerability are widely applicable across different software systems.