Vyper is a Pythonic Smart Contract Language for the EVM. The _abi_decode() function does not validate input when it is nested in an expression. Uses of _abi_decode() can be constructed which allow for bounds checking to be bypassed resulting in incorrect results. This issue has not yet been fixed, but a fix is expected in release 0.3.10. Users are advised to reference pull request #3626.
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Vyper | Vyperlang | 0.3.4 (including) | 0.3.10 (excluding) |