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Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')


Severity Medium
Score 5.4/10


backbone is a module that adds in structure to a JavaScript heavy application through key-value pairs and custom events connecting to your RESTful API through JSON There exists a potential Cross Site Scripting vulnerability in the `Model#Escape` function of backbone 0.3.3 and earlier, if a user is able to supply input. This is due to the regex that's replacing things to miss the conversion of things such as `<` to `<`.

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CWE-79 - Cross Site Scripting

Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.

Advisory Timeline

  • Published