{"action":"Upgrade openzeppelin-cairo-contracts to 0.6.1 or later.","affected":[{"fixed":"0.6.1","introduced":"0.2.0"}],"component":"openzeppelin-cairo-contracts","cve_ids":["CVE-2023-23940"],"ecosystem":"PyPI","epss":0.0022,"exploited":false,"fixed_versions":["0.6.1"],"ghsa_id":"GHSA-626q-v9j4-mcp4","id":"tcs_01M5KF23WP4JKKW8X7SN7ZKKK9","modified_at":"2026-02-22T22:56:17.554616Z","published_at":"2023-02-02T16:59:46Z","references":["https://osv.dev/vulnerability/GHSA-626q-v9j4-mcp4","https://github.com/OpenZeppelin/cairo-contracts/security/advisories/GHSA-626q-v9j4-mcp4","https://nvd.nist.gov/vuln/detail/CVE-2023-23940","https://github.com/OpenZeppelin/cairo-contracts/pull/542/commits/6d4cb750478fca2fd916f73297632f899aca9299","https://github.com/OpenZeppelin/cairo-contracts","https://github.com/pypa/advisory-database/tree/main/vulns/openzeppelin-cairo-contracts/PYSEC-2023-39.yaml"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-626q-v9j4-mcp4","url":"https://osv.dev/vulnerability/GHSA-626q-v9j4-mcp4"}],"summary":"OpenZeppelin Contracts contains Improper Verification of Cryptographic Signature"}