{"cve":"CVE-2024-24564","nvd":{"published":"2024-02-26T20:19:05.627","modified":"2026-06-17T07:14:36.980","status":"Analyzed","description":"Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. When using the built-in `extract32(b, start)`, if the `start` index provided has for side effect to update `b`, the byte array to extract `32` bytes from, it could be that some dirty memory is read and returned by `extract32`. This vulnerability is fixed in 0.4.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-125"],"references":["https://github.com/vyperlang/vyper/commit/3d9c537142fb99b2672f21e2057f5f202cde194f","https://github.com/vyperlang/vyper/security/advisories/GHSA-4hwq-4cpm-8vmx","https://github.com/vyperlang/vyper/security/advisories/GHSA-4hwq-4cpm-8vmx"],"products":["vyperlang:vyper"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2024-24564","score":0.00565,"percentile":0.4696,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4hwq-4cpm-8vmx","url":"https://osv.dev/vulnerability/GHSA-4hwq-4cpm-8vmx","summary":"Vyper's `extract32` can ready dirty memory","modified":"2026-06-10T17:14:16.143920297Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":["<0.4.0"],"fixed":["0.4.0"]}]},{"id":"PYSEC-2024-205","url":"https://osv.dev/vulnerability/PYSEC-2024-205","summary":"","modified":"2026-06-10T17:14:16.567026987Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":["<0.4.0"],"fixed":["0.4.0"]}]}],"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."]}