CVE-2021-41122: Vyperlang Vyper

Medium severity, CVSS 4.3. EPSS: 0.8% chance of exploitation in the next 30 days.

Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions external functions did not properly validate the bounds of decimal arguments. The can lead to logic errors. This issue has been resolved in version 0.3.0.

Affected products

• Vyperlang Vyper: before 0.3.0 (fixed in 0.3.0)

Published 2021-10-05. Last modified 2026-06-17.