CVE-2025-26622 Information

Description

vyper is a Pythonic Smart Contract Language for the EVM. Vyper sqrt() builtin uses the babylonian method to calculate square roots of decimals. Unfortunately improper handling of the oscillating final states may lead to sqrt incorrectly returning rounded up results. This issue is being addressed and a fix is expected in version 0.4.1. Users are advised to upgrade as soon as the patched release is available. There are no known workarounds for this vulnerability.

Reference

https://github.com/vyperlang/vyper/pull/4486 https://github.com/vyperlang/vyper/security/advisories/GHSA-2p94-8669-xg86