feat(java): detect state-changing Stapler do* handlers without @RequirePOST (CWE-352) - #112
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Adds a Java rule for the Jenkins framework: a public 'do*' method (Stapler-routed HTTP handler) that schedules builds, interrupts executors, or replaces the queue sorter without the @RequirePOST annotation.
Generic vulnerable shape:
Stapler routes unannotated do* methods on GET and POST; the Jenkins CSRF crumb is only enforced for POST, so the same state change is triggerable cross-site via a plain GET. Rule ID: codevigilant.java.jenkins.csrf.statechange-without-requirepost (new java/jenkins/csrf tree). Includes pos/neg testcases, validated with semgrep (pos: 1 hit, neg: 0).