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pentesting-web/csrf-cross-site-request-forgery.md
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@ -71,6 +71,10 @@ If the web site contains any **behaviour** that **allows an attacker to set a co
In a further variation on the preceding vulnerability, some applications do not maintain any server-side record of tokens that have been issued, but instead **duplicate each token within a cookie and a request parameter**. When the subsequent request is validated, the application simply verifies that the **token** submitted in the **request parameter matches** the value submitted in the **cookie**.
In this situation, the attacker can again perform a CSRF **attack if the web site contains any cookie setting functionality**.
### Content-Type change
You can change to POST Content-Type to _**application/json, application/x-url-encoded**_ or _**form-multipart**_ and maybe you will be able to bypass the CSRF token.
### Referrer / Origin check bypass
#### Avoid Referrer header