CVE-2023-32675

Name: CVE-2023-32675
Creator: NVD / NIST
Published: 2023-05-19T20:15:09.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2023-32675 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In contracts with more than one regular nonpayable function, it is possible to send funds to the default function, even if the default function is marked `nonpayable`. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. In contracts with more than one regular nonpayable function, it is possible to send funds to the default function, even if the default function is marked `nonpayable`. This applies to contracts compiled with vyper versions prior to 0.3.8. This issue was fixed by the removal of the global `calldatasize` check in commit `02339dfda`. Users are advised to upgrade to version 0.3.8. Users unable to upgrade should avoid use of nonpayable default functions.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.55%

41.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-670

Affected Software

Vendor	Product	Versions
Vyperlang	Vyper	< 0.3.8

References

https://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520Patch
https://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762Exploit, Patch, Vendor Advisory
https://github.com/vyperlang/vyper/commit/02339dfda0f3caabad142060d511d10bfe93c520Patch
https://github.com/vyperlang/vyper/security/advisories/GHSA-vxmm-cwh2-q762Exploit, Patch, Vendor Advisory

Timeline

Published: May 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-32675?

How severe is CVE-2023-32675?

CVE-2023-32675 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2023-32675?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-32675?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST