CVE-2013-7454: XSS Filter Bypasses in validator
Summary
CVE-2013-7454: Multiple XSS Filter Bypasses in validator. Affects validator versions < 1.1.0. Fixed in 1.1.0. How to fix ↓
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Background
The validator package is an npm package used for validating and sanitizing user input in web applications. It provides various functions for validating and filtering input data to prevent common security vulnerabilities such as cross-site scripting (XSS). The package is widely used in JavaScript applications to ensure the integrity and security of user input. However, versions prior to 1.1.0 of the validator package are affected by multiple XSS filter bypasses, which can lead to potential security vulnerabilities.
Vulnerability Detail
The vulnerability in the validator package arises from bypasses discovered in the blacklist-based filter. These bypasses allow malicious users to inject and execute arbitrary JavaScript code in the context of a vulnerable application. The impact of these XSS vulnerabilities can range from unauthorized access to sensitive information to the execution of malicious actions on behalf of the user. The vulnerability is rated as moderate with a CVSS score of 6.1.
How To Fix
Latest published version: 13.15.35 as of 23 Oct 2026
npm install validator@13.15.35Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.1.0
This is the first release that contains the fix.
npm install validator@1.1.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, developers can mitigate the risk by implementing additional input validation and output encoding techniques to prevent XSS attacks. It is recommended to follow secure coding practices and use security libraries or frameworks that provide robust protection against XSS vulnerabilities.
Conclusion
The validator package prior to version 1.1.0 is vulnerable to multiple XSS filter bypasses, which can lead to potential security risks in web applications. Developers should update to the latest version of the package and replace the XSS filter function with the escape filter function to mitigate the vulnerability. Additionally, implementing secure coding practices and using security libraries or frameworks can enhance the overall security of web applications. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for validator →
FAQ
The XSS filter bypasses in the validator package can allow attackers to inject and execute arbitrary JavaScript code in the context of a vulnerable application. This can lead to unauthorized access to sensitive information, session hijacking, defacement of web pages, and other malicious actions.
No, only versions prior to 1.1.0 of the validator package are affected by these XSS filter bypasses. Updating to version 1.1.0 or later resolves the issue.
While specific known exploits for this vulnerability may not be publicly available, the existence of XSS filter bypasses increases the risk of successful XSS attacks. It is important to promptly update the validator package to the latest version and implement additional security measures to mitigate the risk.
Yes, the CVSS score for this vulnerability is 6.1, indicating a moderate severity level. It is recommended to address the vulnerability as soon as possible to prevent potential security breaches.
More information about the validator package, including its documentation, usage examples, and latest updates, can be found on the official npm package page or the GitHub repository of the project.
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