Description (CNA)
Vyper before 0.2.9 deploys forwarder proxies through the built-in create_forwarder_to function that report a fixed 4096-byte RETURNDATASIZE rather than the actual return data size. Calls through these proxies can yield corrupted data when a function returns more than 4096 bytes without return data sanitation, and fail strict return-size checks such as SafeERC20.safeTransfer.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| vyperlang / vyper | affected 0 before 0.2.9; unaffected 0.2.9 |
CWE
CWE-805