CVE-2020-26265: Incorrect Calculation

June 29, 2021

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.

References

github.com/advisories/GHSA-xw37-57qp-9mm4
github.com/ethereum/go-ethereum/pull/21409
github.com/ethereum/go-ethereum/releases/tag/v1.9.20
github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4
nvd.nist.gov/vuln/detail/CVE-2020-26265

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