Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. When using the built-in extract32(b, start), if the start index provided has for side effect to update b, the byte array to extract 32 bytes from, it could be that some dirty memory is read and returned by extract32. This vulnerability is fixed in 0.4.0.
| Software | From | Fixed in |
|---|---|---|
vyper
|
- | 0.3.10.x |
| vyperlang / vyper | - | 0.4.0 |