What is CVE-2023-32675?

CVE-2023-32675 is a low-severity vulnerability in Vyperlang Vyper, classified under Always-Incorrect Control Flow Implementation. CVSS score: 3.7/10. Published 2023-05-19.

How severe is CVE-2023-32675?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Vyperlang Vyper

CVE-2023-32675

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.

EPSS: 0.006 (42.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Vyperlang Vyper — versions < 0.3.8

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2023-32675?: CVE-2023-32675 is a low-severity vulnerability in Vyperlang Vyper, classified under Always-Incorrect Control Flow Implementation. CVSS score: 3.7/10. Published 2023-05-19.
How severe is CVE-2023-32675?: Low severity. CVSS v3 base score is 3.7 out of 10.