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Cross site request forgery is a class of attack that forces an end user to execute unwanted actions on Jenkins. Because of the way this attack works, even Jenkins that's running inside a corporate firewall is vulnerable. A common way to exploit this is by spear phishing.

Enabling Protection

To protect against this class of attacks, go to "Manage Jenkins" > "Configure Global Security" and select "Prevent Cross Site Request Forgery exploits." This option is enabled by default in new installations starting Jenkins 2.x, but if you are still on 1.x or upgrading existing installations to 2.x, this option is off by default.


  • If you are using nginx as a reverse proxy in front of Jenkins, you need an extra system property on Jenkins "". See JENKINS-23793 for more details
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