CVE-2021-39137 json
Consensus flaw during block processing in go-ethereum
published 2021-08-24 5 y ago modified 2026-07-08 4 mo ago also GHSA-9856-9gg9-qcmq , GO-2022-0254 , EUVD-2021-1653
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
go-ethereum is the official Go implementation of the Ethereum protocol. In affected versions a consensus-vulnerability in go-ethereum (Geth) could cause a chain split, where vulnerable versions refuse to accept the canonical chain. Further details about the vulnerability will be disclosed at a later date. A patch is included in the upcoming `v1.10.8` release. No workaround are available.
Patch / fix
- go github.com/ethereum/go-ethereum 1.10.8
- ethereum go_ethereum 1.10.8
- go-ethereum Arch Linux 1.10.8-1
arch linux advisories AVG-2320
Exploit prediction
1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/ethereum/go-ethereum | >=1.10.0, <1.10.8 <1.10.8 |
1.10.8 |
Affected products
- ethereum go-ethereum
Classification
- Weakness
-
- CWE-436 Interpretation Conflict
References
-
github.com
/ethereum/go-ethereum/pull/23381/commits/4d4879cafd1b3c906fc184a8c4a357137465128f
web, patch
-
github.com
/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq
web, third-party-advisory
-
github.com
/ethereum/go-ethereum/releases/tag/v1.10.8
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-39137
advisory
-
github.com
/ethereum/go-ethereum
package
-
pkg.go.dev
/vuln/GO-2022-0254
web
Sources
- CVE List CVE-2021-39137
- GitHub Advisory GHSA-9856-9gg9-qcmq
- NVD CVE-2021-39137
- OSV GO-2022-0254
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