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.

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00081.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Vyperlang
  • Vyper

Configuration 1 [-]

cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*

No data.

No data.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-4284 Vyper's sqrt doesn't define rounding behavior
Github GHSA Github GHSA GHSA-2p94-8669-xg86 Vyper's sqrt doesn't define rounding behavior
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/vyperlang/vyper/pull/4486 cve-icon cve-icon
https://github.com/vyperlang/vyper/security/advisories/GHSA-2p94-8669-xg86 cve-icon cve-icon
History

Fri, 28 Mar 2025 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Vyperlang
Vyperlang vyper
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*
Vendors & Products Vyperlang
Vyperlang vyper

Sat, 22 Feb 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 21 Feb 2025 21:45:00 +0000

Type Values Removed Values Added
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.
Title sqrt doesn't define rounding behavior in Vyper
Weaknesses CWE-682
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-02-22T15:34:42.831Z

Reserved: 2025-02-12T14:51:02.719Z

Link: CVE-2025-26622

cve-icon Vulnrichment

Updated: 2025-02-22T15:34:36.261Z

cve-icon NVD

Status : Analyzed

Published: 2025-02-21T22:15:13.447

Modified: 2025-03-28T20:06:00.130

Link: CVE-2025-26622

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.