CVE-2017-1000505: Exposure of Sensitive Information to an Unauthorized Actor Jenkins Script Security Plugin

The vulnerability stems from Groovy type coercion bypassing sandbox checks for File constructor usage. The patch explicitly subjects coercions to the same checks as new File(String). Key functions are those handling constructor interception (SandboxInterceptor#onNewInstance) and constructor approval (Blacklist#isConstructorBlacklisted). These functions in ≤1.36 did not account for coercion-triggered File instantiations, allowing unauthorized file reads. The high confidence for SandboxInterceptor stems from its direct role in intercepting object creation, while Blacklist has medium confidence due to indirect involvement in approval logic.