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System.setProperty("hudson.model.DirectoryBrowserSupport.CSP", "sandbox; script-src 'self'; connect-src 'self'; img-src 'self' data:; style-src 'self';")
NOTE : The web browser refresh does not always reload the page with the new relaxed rules due to caching. To be sure this doesn't happen it's advised to restart your browser.
If this needs to be reset to default (more secure) the run the following command : System.clearProperty("hudson.model.DirectoryBrowserSupport.CSP")
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