CVE-2026-24555 in ArtPlacer Widget Plugin
Summary
by MITRE • 01/23/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in artplacer ArtPlacer Widget artplacer-widget allows Stored XSS.This issue affects ArtPlacer Widget: from n/a through <= 2.23.1.
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Analysis
by VulDB Data Team • 01/23/2026
The vulnerability identified as CVE-2026-24555 represents a critical cross-site scripting flaw within the artplacer ArtPlacer Widget plugin, specifically affecting versions ranging from the initial release through version 2.23.1. This stored cross-site scripting vulnerability arises from inadequate input sanitization during web page generation processes, creating a persistent security risk that can compromise user sessions and execute malicious code within the context of affected websites. The flaw resides in the plugin's handling of user-supplied data that is subsequently rendered in web pages without proper neutralization mechanisms.
The technical implementation of this vulnerability stems from the plugin's failure to adequately sanitize or escape user input before incorporating it into dynamically generated web content. When users interact with the widget or submit content through the plugin interface, the input data flows directly into HTML generation processes without sufficient validation or encoding. This allows malicious actors to inject persistent script payloads that remain stored within the application's database or configuration files. The vulnerability specifically manifests as a stored XSS attack vector because the malicious scripts are saved and executed whenever affected pages are loaded, rather than requiring immediate injection through a single request. This characteristic makes the vulnerability particularly dangerous as it can affect multiple users over extended periods without requiring repeated exploitation attempts.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to perform session hijacking, deface websites, steal sensitive user data, or redirect victims to malicious domains. The stored nature of the vulnerability means that once exploited, the malicious code persists across user sessions and can affect any visitor to the compromised website. Attackers can leverage this weakness to manipulate the plugin's functionality, inject phishing content, or establish backdoors within the affected web environment. The vulnerability affects not only the immediate user experience but also poses risks to the overall security posture of websites utilizing the affected plugin, potentially leading to data breaches, reputation damage, and compliance violations.
Mitigation strategies for this vulnerability should prioritize immediate patching of the affected plugin to version 2.23.2 or later, which contains the necessary input sanitization fixes. Organizations should implement comprehensive input validation mechanisms at multiple layers including client-side and server-side filtering, employ proper output encoding techniques, and establish regular security auditing procedures for third-party plugins. The remediation process should include thorough testing of the patched version to ensure no regressions in functionality while verifying that the XSS vulnerability has been properly addressed. Security teams should also consider implementing web application firewalls and content security policies as additional protective measures, while establishing monitoring protocols to detect potential exploitation attempts. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws and represents a significant concern in the ATT&CK framework under the T1059.001 technique for command and scripting interpreter, as attackers can leverage the stored XSS to execute malicious commands within user browsers.