CVE-2024-26149: Vyperlang Vyper

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. If an excessively large value is specified as the starting index for an array in `_abi_decode`, it can cause the read position to overflow. This results in the decoding of values outside the intended array bounds, potentially leading to exploitations in contracts that use arrays within `_abi_decode`. This vulnerability affects 0.3.10 and earlier versions.

Affected products

• Vyperlang Vyper: up to and including 0.3.10

Published 2024-02-26. Last modified 2026-06-17.