AIKIDO-2026-608574
DynamicExpresso.Core is vulnerable to Unsafe Reflection
88
High Risk
This Affects:
DynamicExpresso.CoreTL;DR
DynamicExpresso blocks reflection by default, but DisableReflectionVisitor only inspects static expression-tree nodes. With InterpreterOptions.LateBindObject enabled, casting a System.Type to object emits dynamic call sites that skip that check, so an attacker-controlled expression can load System.Diagnostics.Process and execute commands as the host process. The patch enforces the same reflection policy against the runtime target of late-bound operations.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range, enable InterpreterOptions.LateBindObject, and evaluate untrusted expression text.
Background info
DynamicExpresso.Core is vulnerable to Unsafe Reflection in versions 2.8.0 - 2.19.3.
How to fix this
Upgrade the DynamicExpresso.Core library to the patch version.
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