CVE-2024-43321 in Team Showcase Plugin
Summary
by MITRE • 08/18/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in PickPlugins Team Showcase allows Stored XSS.This issue affects Team Showcase: from n/a through 1.22.23.
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Analysis
by VulDB Data Team • 03/14/2025
The CVE-2024-43321 vulnerability represents a critical security flaw in the PickPlugins Team Showcase plugin that enables stored cross-site scripting attacks. This vulnerability resides in the improper neutralization of input during web page generation processes, creating a pathway for attackers to inject malicious scripts into the application's output. The flaw specifically affects versions of the Team Showcase plugin ranging from an unspecified initial version through 1.22.23, indicating a prolonged exposure window that could have allowed numerous potential exploitation opportunities. The vulnerability's classification as a stored XSS issue means that malicious payloads can be permanently stored on the server and subsequently executed whenever affected pages are accessed by unsuspecting users, making it particularly dangerous for web applications that handle user-generated content.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the plugin's codebase. When users submit content through the Team Showcase interface, the application fails to properly sanitize or escape user-supplied data before incorporating it into dynamically generated web pages. This failure creates an environment where malicious actors can embed script tags or other executable code within the content fields. The ATT&CK framework categorizes this as a form of code injection technique under the T1566.001 sub-technique, specifically targeting the web application layer where user input is processed. CWE-79, which defines Cross-site Scripting vulnerabilities, directly applies to this flaw as it represents the improper handling of untrusted data in web applications. The vulnerability essentially allows attackers to bypass standard security measures that would normally prevent script execution in web contexts.
The operational impact of CVE-2024-43321 extends beyond simple data theft or defacement, as it provides attackers with persistent access to victim systems through compromised user sessions. When exploited, the stored XSS vulnerability can enable session hijacking, credential theft, and the execution of arbitrary commands on behalf of authenticated users. This poses significant risks to organizations using the affected plugin, as it could lead to complete compromise of their WordPress installations and associated user data. The vulnerability affects not only the immediate plugin functionality but also potentially exposes other system components that rely on the same user authentication mechanisms. Organizations may experience data breaches, loss of user trust, and potential regulatory compliance violations. The stored nature of the vulnerability means that once exploited, malicious scripts can affect multiple users over extended periods without requiring repeated exploitation attempts.
Mitigation strategies for CVE-2024-43321 should prioritize immediate plugin updates to versions that address the XSS vulnerability, as provided by the vendor. Security teams should implement comprehensive input validation and output encoding measures to prevent similar issues in the future, ensuring that all user-supplied content is properly sanitized before being rendered in web pages. The implementation of Content Security Policy headers can provide an additional layer of protection against script execution, while regular security audits of third-party plugins should be conducted to identify potential vulnerabilities. Organizations should also consider deploying web application firewalls to detect and block suspicious input patterns that could indicate XSS attempts. According to industry best practices and the CWE guidelines, proper input validation combined with output encoding represents the most effective defense against stored XSS vulnerabilities. Security monitoring should be enhanced to detect unusual patterns in user-generated content that might indicate malicious activity, and incident response procedures should be updated to address potential exploitation of this vulnerability.