CVE-2023-32675CWE-670

Nonpayable default functions are sometimes payable in vyper

Low · published May 19, 2023

CVSS v3.1
3.7
EPSS
1%
Percentile
45.5
In the wild
Unconfirmed
What it is

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In contracts with more than one regular nonpayable function, it is possible to send funds to the default function, even if the default function is marked `nonpayable`. This applies to contracts compiled with vyper versions prior to 0.3.8. This issue was fixed by the removal of the global `calldatasize` check in commit `02339dfda`. Users are advised to upgrade to version 0.3.8. Users unable to upgrade should avoid use of nonpayable default functions.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00553 · 45.5th percentile
Weakness
CWE-670 · Always-Incorrect Control Flow Implementation
Published
2023-05-19T19:46Z
EPSS history
Timeline
  • 19 MAY 19:46Z
    Nonpayable default functions are sometimes payable in vyper
    cvelistv5