CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:NCVE-2020-26265
Medium (5.3) in ethereum go ethereum. EPSS 0.9% chance of exploitation in the next 30 days. Fixed in github.com/ethereum/go-ethereum 1.9.20.
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.
Severity
- EPSS
- 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
- CWE
- CWE-682
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ethereum:go_ethereum
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xw37-57qp-9mm4 | Go | github.com/ethereum/go-ethereum | >=1.9.4 <1.9.20 | 1.9.20 |
| GO-2021-0105 | Go | github.com/ethereum/go-ethereum | >=1.9.4 <1.9.20 | 1.9.20 |