{"action":"Upgrade vyper to 0.3.8 or later.","affected":[{"fixed":"0.3.8","introduced":"0"}],"component":"vyper","cve_ids":["CVE-2023-31146"],"ecosystem":"PyPI","epss":0.01241,"exploited":false,"fixed_versions":["0.3.8"],"ghsa_id":"GHSA-3p37-3636-q8wv","id":"tcs_01M5KEW5MGF5RGEGSFBQHPCZHH","modified_at":"2026-09-10T03:49:54.489764847Z","published_at":"2023-05-12T20:21:54Z","references":["https://osv.dev/vulnerability/GHSA-3p37-3636-q8wv","https://github.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wv","https://nvd.nist.gov/vuln/detail/CVE-2023-31146","https://github.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edb","https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-77.yaml","https://github.com/vyperlang/vyper"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-3p37-3636-q8wv","url":"https://osv.dev/vulnerability/GHSA-3p37-3636-q8wv"}],"summary":"Vyper vulnerable to OOB DynArray access when array is on both LHS and RHS of an assignment"}