Information Leakage / Disclosure of Source Code

Web and API


Disclosure of source code is a vulnerability that occurs when an application or system fails to protect its source code from unauthorized access. The source code of an application is its most sensitive asset, as it contains confidential information and business logic. This vulnerability is identified by the Common Weakness Enumeration (CWE) directory as CWE-539: Information Exposure Through Disclosure of Sensitive Information. It falls within the category of "Information Leakage" in the OWASP Testing Guide.


The risk of disclosure of source code is that confidential information and proprietary software can be accessed which can cause monetary and reputational damage. If the source code is publicly accessible, malicious actors can use it to identify bugs and other security vulnerabilities, which can then be exploited. Therefore, the risk of disclosure of source code is high.


To mitigate the risk of disclosure of source code, organizations should ensure that only authorized personnel have access to the source code. This can be done by deploying various authentication methods such as passwords, two-factor authentication, and biometric authentication. Organizations should also regularly review the source code for vulnerabilities and update it as soon as new threats are identified. Additionally, organizations should also ensure that their web and API applications are armored with web application firewalls and other security tools.

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