CVE-2025-30840 in xili-dictionary Plugin
Summary
by MITRE • 04/01/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Michel - xiligroup dev xili-dictionary allows Reflected XSS. This issue affects xili-dictionary: from n/a through 2.12.5.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 04/01/2025
The CVE-2025-30840 vulnerability represents a critical cross-site scripting weakness in the xili-dictionary plugin developed by xiligroup, specifically impacting versions ranging from an unspecified initial version through 2.12.5. This vulnerability falls under the broader category of improper input neutralization during web page generation, creating a pathway for malicious actors to inject client-side scripts into web applications. The reflected nature of this XSS vulnerability indicates that the malicious script is executed in the victim's browser through a crafted request that reflects the script back to the user, making it particularly dangerous for web applications that process user input without proper sanitization.
The technical flaw manifests when the xili-dictionary plugin fails to adequately sanitize or escape user-supplied input before incorporating it into dynamically generated web pages. This failure allows attackers to craft malicious payloads that, when processed by the plugin, get executed in the context of other users' browsers. The vulnerability occurs during the web page generation phase where input parameters are directly embedded into HTML output without appropriate encoding or validation mechanisms. This type of weakness is classified as CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security issue that has been consistently identified as one of the top security risks in web development practices.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. Attackers can exploit this reflected XSS vulnerability by crafting URLs that contain malicious scripts, which when clicked by unsuspecting users, execute in their browsers and potentially compromise their sessions or steal sensitive information. The vulnerability is particularly concerning because it affects a dictionary plugin that likely handles various types of user input including search queries, content submissions, and metadata fields, providing multiple potential attack vectors for exploitation.
Mitigation strategies for CVE-2025-30840 should prioritize immediate remediation through the application of security patches or updates provided by the vendor. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent the injection of malicious scripts into web pages. The implementation of Content Security Policy headers can provide additional protection layers against XSS attacks by restricting the sources from which scripts can be loaded and executed. Security measures should include the adoption of proper parameter validation techniques, the use of secure coding practices that enforce input sanitization, and the implementation of automatic escaping of user-supplied data before it is rendered in web page contexts. Organizations should also consider implementing web application firewalls and regular security scanning to detect and prevent exploitation attempts, while following the ATT&CK framework's guidance on preventing and detecting cross-site scripting attacks through proper input validation and output encoding practices.