{"id":"CVE-2024-24564","aliases":["GHSA-4hwq-4cpm-8vmx","PYSEC-2024-205"],"url":"https://o3.security/vulnerability/CVE-2024-24564","summary":"Vyper extract32 can ready dirty memory","details":"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.","published":"2024-02-26T20:16:13.604Z","modified":"2026-07-15T01:49:04.445873858Z","cvss":{"score":3.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"vyper","fixedVersion":"0.4.0"}],"fix":{"url":"https://github.com/vyperlang/vyper/commit/3d9c537142fb99b2672f21e2057f5f202cde194f","label":"vyperlang/vyper@3d9c537"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/24xxx/CVE-2024-24564.json"},{"type":"ADVISORY","url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-4hwq-4cpm-8vmx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-24564"},{"type":"FIX","url":"https://github.com/vyperlang/vyper/commit/3d9c537142fb99b2672f21e2057f5f202cde194f"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:04.445873858Z"}}