{"action":"Upgrade github.com/ethereum/go-ethereum to 1.9.20 or later.","affected":[{"fixed":"1.9.20","introduced":"1.9.4"}],"component":"github.com/ethereum/go-ethereum","cve_ids":["CVE-2020-26265"],"ecosystem":"Go","epss":0.0092,"exploited":false,"fixed_versions":["1.9.20"],"ghsa_id":"GHSA-xw37-57qp-9mm4","id":"tcs_01M5KFSVB7MD80W04KZ5WX492A","modified_at":"2026-09-10T03:49:15.235306786Z","published_at":"2021-06-29T21:14:16Z","references":["https://osv.dev/vulnerability/GHSA-xw37-57qp-9mm4","https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4","https://nvd.nist.gov/vuln/detail/CVE-2020-26265","https://github.com/ethereum/go-ethereum/pull/21080","https://github.com/ethereum/go-ethereum/pull/21409","https://github.com/ethereum/go-ethereum/commit/87c0ba92136a75db0ab2aba1046d4a9860375d6a","https://github.com/ethereum/go-ethereum","https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20","https://pkg.go.dev/vuln/GO-2021-0105"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-xw37-57qp-9mm4","url":"https://osv.dev/vulnerability/GHSA-xw37-57qp-9mm4"}],"summary":"Consensus flaw during block processing in github.com/ethereum/go-ethereum"}