{"action":"Upgrade vyper to 0.3.0 or later.","affected":[{"fixed":"0.3.0","introduced":"0"}],"component":"vyper","cve_ids":["CVE-2021-41121"],"ecosystem":"PyPI","epss":0.01074,"exploited":false,"fixed_versions":["0.3.0"],"ghsa_id":"GHSA-xv8x-pr4h-73jv","id":"tcs_01M5KG4S1TGPAPY1WZ0GAN7K8B","modified_at":"2026-07-08T06:28:53.475803621Z","published_at":"2021-10-12T15:59:29Z","references":["https://osv.dev/vulnerability/GHSA-xv8x-pr4h-73jv","https://github.com/vyperlang/vyper/security/advisories/GHSA-xv8x-pr4h-73jv","https://nvd.nist.gov/vuln/detail/CVE-2021-41121","https://github.com/vyperlang/vyper/pull/2447","https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2021-365.yaml","https://github.com/vyperlang/vyper"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-xv8x-pr4h-73jv","url":"https://osv.dev/vulnerability/GHSA-xv8x-pr4h-73jv"}],"summary":"Memory corruption when returning a literal struct with a private call inside of it"}