I'm one of the maintainers of the Artifactory Plugin. We were approached by a user, complaining about an issue after upgrading to version 2.250 of Jenkins. The issue does seem to be related to the upgrade to 2.250 (or a few versions before that), because it all works with 2.215 but fails with 2.250.

Here's the issue:

The Artifactory Plugin includes the following script in a jelly file:

```

<script>
var selectPlugin = document.getElementById("pluginList");
selectPlugin.onchange = onPluginChange;
var buildBind = <st:bind value="${it}"/>;
var promoteInfoListSize = "${it.PromoteInfoListSize}";
if (promoteInfoListSize == 1)

{ loadBuild(buildBind, false); // Auto-load }

</script>

```

The loadBuild function corresponds to a method in the java class.

With version 2.250, this function call started raising this warning:

WARNING hudson.security.csrf.CrumbFilter#doFilter: No valid crumb was included in request for /$stapler/bound/3f23eab6-0052-48a8-af63-a931a2e39c52/loadBuild by e. Returning 403.

I added @RequirePOST to the java method, but this does not resolve the issue.

Here are the links to the javascript and java files:

https://github.com/jfrog/jenkins-artifactory-plugin/blob/master/src/main/resources/org/jfrog/hudson/release/promotion/UnifiedPromoteBuildAction/form.jelly

https://github.com/jfrog/jenkins-artifactory-plugin/blob/master/src/main/java/org/jfrog/hudson/release/promotion/UnifiedPromoteBuildAction.java

I couldn't find a solution to this issue - your help with this will be greatly appreciated!