OverrideFuzz uses semantic-aware grammar fuzzing with reflection to model override hooks and dynamic rebinding, producing coverage growth and inputs that match known vulnerability patterns on CPython, Lua, and QuickJS without discovering new bugs in the evaluation window.
UAF when writing to a bytearray with an element implementing __index__ with side-ef- fects
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OverrideFuzz: Semantic-Aware Grammar Fuzzing for Script-Runtime Vulnerabilities
OverrideFuzz uses semantic-aware grammar fuzzing with reflection to model override hooks and dynamic rebinding, producing coverage growth and inputs that match known vulnerability patterns on CPython, Lua, and QuickJS without discovering new bugs in the evaluation window.