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Page request validation is disabled

ID: cs/web/request-validation-disabled Kind: problem Security severity: 7.5 Severity: warning Precision: high Tags: - security - frameworks/asp.net - external/cwe/cwe-016 Query suites: - csharp-code-scanning.qls - csharp-security-extended.qls - csharp-security-and-quality.qls

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Request validation is a feature in ASP.NET that protects web applications against potentially malicious content in requests, specifically against cross-site scripting attacks (XSS).

Recommendation

Enable the directive validateRequest in your web.config file: <pages validateRequest="true" />

Example

The following example shows the validateRequest flag set to false in a Web.config file for ASP.NET. This will disable validation, and leave the web application vulnerable against common XSS attacks:

<configuration> <system.web> <pages validateRequest="false" /> </system.web> </configuration>

If validateRequest is set to true, validation is enabled:

<configuration> <system.web> <pages validateRequest="true" /> </system.web> </configuration>

References