CVE-2024-24559: Vyperlang Vyper

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Vyper is a Pythonic Smart Contract Language for the EVM. There is an error in the stack management when compiling the `IR` for `sha3_64`. Concretely, the `height` variable is miscalculated. The vulnerability can't be triggered without writing the `IR` by hand (that is, it cannot be triggered from regular vyper code). `sha3_64` is used for retrieval in mappings. No flow that would cache the `key` was found so the issue shouldn't be possible to trigger when compiling the compiler-generated `IR`. This issue isn't triggered during normal compilation of vyper code so the impact is low. At the time of publication there is no patch available.

Affected products

• Vyperlang Vyper: up to and including 0.3.10

Published 2024-02-05. Last modified 2026-06-17.