CVE-2025-53301 in Team Content Plugin
Summary
by MITRE • 06/27/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Theme Junkie Theme Junkie Team Content allows DOM-Based XSS. This issue affects Theme Junkie Team Content: from n/a through 0.1.1.
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Analysis
by VulDB Data Team • 06/27/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by users. The vulnerability falls under the CWE-79 category for Cross-Site Scripting and specifically manifests as a DOM-based XSS attack within the Theme Junkie Team Content plugin. The issue occurs during the web page generation process when input parameters are not properly sanitized or neutralized before being rendered in the browser environment. Attackers can exploit this weakness by crafting malicious input that gets executed in the victim's browser context, potentially leading to session hijacking, credential theft, or arbitrary code execution. The vulnerability affects all versions of the plugin from the initial release through version 0.1.1, indicating a persistent flaw that was not adequately addressed in the development cycle.
The technical implementation of this DOM-based XSS vulnerability stems from improper handling of user-supplied data within the plugin's JavaScript execution environment. When the plugin processes input parameters from URL fragments or other client-side sources, it fails to adequately validate or escape these values before incorporating them into dynamic DOM elements. This allows attackers to inject malicious JavaScript code that executes in the context of the victim's browser session. The attack vector specifically targets the document object model where user input directly influences the execution flow, making it particularly dangerous as it operates entirely within the browser without requiring server-side processing. The vulnerability's impact extends beyond simple script execution to potentially compromise user sessions and enable more sophisticated attacks.
The operational impact of this vulnerability creates significant security risks for websites utilizing the affected plugin. An attacker could manipulate the plugin's functionality to inject malicious scripts that persistently execute in users' browsers, potentially stealing cookies, session tokens, or other sensitive information. The DOM-based nature of the vulnerability means that even if the server-side processing is secure, client-side script execution remains compromised. This vulnerability directly aligns with ATT&CK technique T1531 for Account Access Token Manipulation and T1203 for Exploitation for Client Execution, as it enables attackers to gain unauthorized access through compromised user sessions. Organizations running affected versions face potential data breaches, unauthorized access to user accounts, and possible compromise of entire web applications through the exploitation of this single vulnerability.
Mitigation strategies for this vulnerability should prioritize immediate plugin updates to versions that address the XSS flaw, though developers should also implement proper input validation and output encoding practices. The recommended defensive measures include implementing Content Security Policy headers to limit script execution, sanitizing all user-supplied input before processing, and employing proper JavaScript escaping techniques when incorporating dynamic data into DOM elements. Security teams should conduct thorough vulnerability assessments of all plugins and themes to identify similar issues, as this vulnerability demonstrates a pattern of insufficient input validation in web application components. Organizations should also consider implementing web application firewalls and monitoring for suspicious input patterns that could indicate exploitation attempts. The vulnerability serves as a reminder of the critical importance of input validation and output encoding in preventing XSS attacks, particularly in client-side JavaScript execution environments where DOM manipulation occurs.