{"cve":"CVE-2021-41122","nvd":{"published":"2021-10-05T23:15:07.487","modified":"2026-06-17T04:07:54.980","status":"Modified","description":"Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions external functions did not properly validate the bounds of decimal arguments. The can lead to logic errors. This issue has been resolved in version 0.3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-682"],"references":["https://github.com/vyperlang/vyper/pull/2447","https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46","https://github.com/vyperlang/vyper/pull/2447","https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46"],"products":["vyperlang:vyper"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-41122","score":0.00803,"percentile":0.56708,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c7pr-343r-5c46","url":"https://osv.dev/vulnerability/GHSA-c7pr-343r-5c46","summary":"missing clamps for decimal args in external functions","modified":"2026-07-08T06:29:21.993928485Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":["<0.3.0"],"fixed":["0.3.0"]}]},{"id":"PYSEC-2021-366","url":"https://osv.dev/vulnerability/PYSEC-2021-366","summary":"","modified":"2023-11-08T04:06:51.916176Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":["<0.3.0"],"fixed":["0.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}