JavaScript Prototypes Behind the Scenes
summary
Shows exactly how new sets an object’s internal prototype to the function’s object.create blueprint and how methods live on prototypes while per-instance state ends up on the object (demo: ++ creates an own property). Demonstrates the __proto__ and constructor paths to reach the global prototype and reproduces a real-world prototype pollution chain (lodash → Kibana) that yields RCE via merged JSON. Recommends creating null-prototype data objects and using npm install secure jsonpass.
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chapters (4)
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