CVE-2026-114532 in UI Icons
Summary
by MITRE • 10/30/2026
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal UI Icons allows Cross-Site Scripting (XSS). This issue affects UI Icons versions: from 0.0.0 to 1.1.3, from 2.0.0 to 2.0.2.
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Analysis
by VulDB Data Team • 10/30/2026
The identified security flaw represents a classic instance of Improper Neutralization of Input During Web Page Generation, commonly known as Cross-Site Scripting or XSS, within the Drupal UI Icons module. This vulnerability arises from insufficient sanitization and validation mechanisms when processing user-supplied input that is subsequently rendered in web pages without proper encoding. The core technical failure lies in the application's inability to distinguish between executable script content and safe data, allowing an attacker to inject malicious client-side scripts into the context of other users' browsers. This specific issue impacts UI Icons versions ranging from 0.0.0 through 1.1.3 and extends further to include versions 2.0.0 up to 2.0.2, indicating a persistent weakness in input handling practices across multiple major releases of this module.
From a technical perspective, the vulnerability exploits the lack of robust output encoding or context-aware escaping when dynamic content is inserted into HTML structures. When an attacker provides crafted input containing JavaScript code, such as event handlers like onerror or script tags, the application fails to neutralize these elements before rendering them in the browser environment. Consequently, the malicious scripts are executed by the victim's web browser under the security context of the vulnerable website. This execution occurs within the same origin policy framework, granting the injected script full access to cookies, session tokens, and other sensitive data associated with that domain. The flaw is particularly dangerous because it can be triggered through various vectors depending on how user input is collected, whether via form submissions, URL parameters, or administrative interface inputs, thereby expanding the attack surface significantly for any site utilizing these affected versions of UI Icons.
The operational impact of this vulnerability is severe and multifaceted, primarily centering around session hijacking and unauthorized access to sensitive information. By executing arbitrary JavaScript in the context of a victim's browser, an attacker can steal authentication cookies or tokens, effectively impersonating legitimate users including administrators with elevated privileges. This capability allows for complete compromise of user accounts and potentially the entire Drupal installation if administrative rights are obtained. Furthermore, attackers may use this vector to deface websites by modifying DOM elements, redirect users to malicious phishing sites designed to harvest credentials, or deploy further malware through drive-by downloads facilitated by browser exploits triggered via the injected script. The persistence of such scripts can also lead to long-term compromise where subsequent visits by other users result in repeated exploitation without additional effort from the attacker.
This vulnerability aligns directly with CWE-79, which categorizes Improper Neutralization of Input During Web Page Generation as a critical weakness in web application security. In terms of offensive cyber operations and threat modeling, this flaw maps to MITRE ATT&CK technique T1059.007, specifically the use of JavaScript for command execution or data exfiltration within browser environments. It also relates to T1189, Drive-by Client Compromise, if the injected script leverages additional exploits against outdated plugins or browsers present on victim machines. Understanding these mappings is crucial for security teams aiming to prioritize remediation efforts and align their defense strategies with established industry frameworks that define common attack patterns and mitigation requirements.
To mitigate this vulnerability, immediate action must be taken by upgrading the Drupal UI Icons module to a version newer than 2.0.3 or whichever release explicitly addresses this input validation deficiency. Until an upgrade is feasible, administrators should implement strict content security policies using Content-Security-Policy headers to restrict script execution sources and prevent inline scripts from running unless absolutely necessary. Additionally, deploying web application firewalls can provide a layer of defense by filtering out known malicious payloads containing XSS signatures before they reach the vulnerable application logic. Developers must also ensure that all future input handling follows secure coding standards, emphasizing output encoding tailored to the specific context such as HTML body, attribute, or JavaScript string contexts, thereby neutralizing special characters and preventing script injection at the source rather than relying solely on perimeter defenses.