📄 V8 BigInt String Conversion Stress Test Conceptual Sandbox

This is a V8 Sandbox Escape vulnerability in BigInt::Allocate where buffers are shuffled outside the sandbox. The vulnerability allows for writes outside the boundaries of the allocated buffer within the sandbox outbound write by manipulating data during the MultiplyFFT process...

📄 V8 StringToBigInt Memory Corruption Sandbox Bypass

V8 suffers from a sandbox bypass vulnerability due to memory corruption during StringToBigInt conversion. The function v8::internal::StringToBigInt is used by V8 when converting a string to a BigInt e.g. via BigInt“1337”. It first parses the string into individual digitt’s in the...

CVE-2025-62496 Integer overflow in js_bigint_from_string in QuickJS

A vulnerability exists in the QuickJS engine's BigInt string parsing logic jsbigintfromstring when attempting to create a BigInt from a string with an excessively large number of digits. The function calculates the necessary number of bits nbits required to store the BigInt using the formula:...