CVE-2025-26622

sqrt doesn't define rounding behavior in Vyper

Published: Feb 21, 2025Updated: Mar 28, 2025 Sources: CVE List NVD GHSACWE-682

7.5HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-682 NVD-CWE-noinfo

Affected Products

vyperlang

oss-project

vyperMixed

DevTools & CI / build-test-tools

PyPI

package-ecosystem

vyper

OSS Libraries

Exploitability

Official Patch Available

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References

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

github.com

https://github.com/vyperlang/vyper/pull/4486

github.com

https://nvd.nist.gov/vuln/detail/CVE-2025-26622

nvd.nist.gov

and 2 more references View all →

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