Highlights
Sandbox Escape: 2 prior fixes. Scrutinize any change in this area.
common/src/main/java/com/espertech/esper/common/internal/epl/script/core/ExprNodeScript.java: most-fixed (1 issue). Treat as high-risk during review.
2 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Sandbox Escape: Unrestricted script compilation within EPL queries allows remote attackers to execute arbitrary scripts in the application's context. Mitigations require explicit configuration options to disable script compiling entirely.
Sandbox Escape: Insecure class resolution via class loader providers allows queries to load unauthorized Java classes, escaping the sandbox. This requires strict verification and class loader isolation during runtime resolution.