{"id":"CVE-2022-24787","aliases":["GHSA-7vrm-3jc8-5wwm","PYSEC-2022-196"],"url":"https://o3.security/vulnerability/CVE-2022-24787","summary":"Incorrect Comparison in Vyper","details":"Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. In version 0.3.1 and prior, bytestrings can have dirty bytes in them, resulting in the word-for-word comparisons giving incorrect results. Even without dirty nonzero bytes, two bytestrings can compare to equal if one ends with `\"\\x00\"` because there is no comparison of the length. A patch is available and expected to be part of the 0.3.2 release. There are currently no known workarounds.","published":"2022-04-04T17:35:10Z","modified":"2026-07-15T01:49:11.486814789Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"vyper","fixedVersion":"0.3.2"}],"fix":{"url":"https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508","label":"vyperlang/vyper@2c73f83"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24787.json"},{"type":"ADVISORY","url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-24787"},{"type":"FIX","url":"https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:11.486814789Z"}}