{"containers":{"cna":{"affected":[{"product":"go-ethereum","vendor":"ethereum","versions":[{"status":"affected","version":">= 1.9.4, < 1.9.20"}]}],"descriptions":[{"lang":"en","value":"Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-682","description":"CWE-682 Incorrect Calculation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2020-12-11T16:45:15.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4"},{"tags":["x_refsource_MISC"],"url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20"}],"source":{"advisory":"GHSA-xw37-57qp-9mm4","discovery":"UNKNOWN"},"title":"Consensus flaw during block processing","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2020-26265","STATE":"PUBLIC","TITLE":"Consensus flaw during block processing"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"go-ethereum","version":{"version_data":[{"version_value":">= 1.9.4, < 1.9.20"}]}}]},"vendor_name":"ethereum"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Go Ethereum, or \"Geth\", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-682 Incorrect Calculation"}]}]},"references":{"reference_data":[{"name":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4","refsource":"CONFIRM","url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4"},{"name":"https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20","refsource":"MISC","url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20"}]},"source":{"advisory":"GHSA-xw37-57qp-9mm4","discovery":"UNKNOWN"}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T15:56:03.493Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20"}]}]},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2020-26265","datePublished":"2020-12-11T16:45:15.000Z","dateReserved":"2020-10-01T00:00:00.000Z","dateUpdated":"2024-08-04T15:56:03.493Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}