CVE-2021-32850 in jquery-minicolors
Summary
by MITRE • 02/21/2023
A vulnerability was found in claviska jquery-minicolors up to 2.3.5. It has been rated as problematic. Affected by this issue is some unknown functionality of the file jquery.minicolors.js. The manipulation leads to cross site scripting. The attack may be launched remotely. Upgrading to version 2.3.6 is able to address this issue. The name of the patch is ef134824a7f4110ada53ea6c173111a4fa2f48f3. It is recommended to upgrade the affected component. VDB-215306 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 07/05/2025
The CVE-2021-32850 vulnerability represents a cross-site scripting vulnerability within the claviska jquery-minicolors library version 2.3.5 and earlier. This client-side JavaScript library provides color picker functionality for web applications, making it a common dependency in web development projects. The vulnerability resides in the jquery.minicolors.js file and affects an unknown but significant portion of the library's functionality, indicating a fundamental flaw in how the library processes user input or renders color values. The issue has been classified as problematic due to its potential to enable malicious actors to inject arbitrary JavaScript code into web pages, thereby compromising user sessions and potentially leading to data theft or further exploitation.
The technical nature of this vulnerability stems from inadequate input validation and output encoding within the color picker implementation. When users interact with the color picker interface, the library processes color values that may contain malicious script payloads. The lack of proper sanitization allows attackers to inject script code that executes in the context of other users' browsers when they view pages containing the vulnerable color picker functionality. This remote execution capability means attackers do not require physical access to systems or direct user interaction beyond visiting a malicious webpage. The vulnerability's classification aligns with CWE-79, which describes cross-site scripting flaws where untrusted data is improperly incorporated into web page content without proper validation or encoding.
The operational impact of CVE-2021-32850 extends beyond simple script injection, as it can enable more sophisticated attacks such as session hijacking, credential theft, and privilege escalation within affected applications. Web applications using the vulnerable library become potential vectors for delivering malware or conducting phishing attacks against their users. The vulnerability affects any web application that incorporates the jquery-minicolors library, making it particularly concerning given the library's widespread adoption. Organizations running multiple web applications that utilize this library may face cascading security impacts, as a single compromised color picker component can potentially affect entire application ecosystems. The remote attack vector eliminates the need for network-level access, making the vulnerability particularly dangerous in environments where user interaction with web applications is common.
Security mitigation for this vulnerability requires immediate upgrading to version 2.3.6 of the jquery-minicolors library, which contains the patch ef134824a7f4110ada53ea6c173111a4fa2f48f3. Organizations should conduct comprehensive vulnerability assessments to identify all instances of the affected library within their web applications and third-party dependencies. The patch implementation addresses the core input validation issues that enabled the XSS attack, requiring minimal disruption to existing functionality while providing robust protection against malicious script injection. Security teams should also implement additional monitoring measures to detect potential exploitation attempts and establish automated scanning processes to identify other vulnerable libraries within their technology stack. This vulnerability demonstrates the critical importance of maintaining up-to-date third-party dependencies and implementing proper security controls for client-side libraries, as these components often form the attack surface for web applications and require consistent security monitoring and patch management processes.