7.5
HIGH
CVE-2021-39137
Go-ethereum Consensus Chain Split Vulnerability
Description

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.

INFO

Published Date :

Aug. 24, 2021, 4:15 p.m.

Last Modified :

Nov. 21, 2024, 6:18 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-39137 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-39137 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ethereum go_ethereum
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-39137.

URL Resource
https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8 Third Party Advisory
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq Third Party Advisory
https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8 Third Party Advisory
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
alan-eth/eth-p2p-version-milestones

None

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : June 26, 2025, 8:24 a.m. This repo has been linked 4 different CVEs too.
Profile Photo
demining/Solidity-Forcibly-Send-Ether-Vulnerability

Solidity Forcibly Send Ether Vulnerability to a Smart Contract continuation of the list of general EcoSystem security from attacks

ecosystem eth ethereum ethereum-contract smart-contracts solidity solidity-codes solidity-contracts vulnerabilities vulnerability

JavaScript

Updated: 6 months, 4 weeks ago
5 stars 0 fork 0 watcher
Born at : June 5, 2023, 5:39 p.m. This repo has been linked 31 different CVEs too.
Profile Photo
blocksecteam/blocksec_academy

None

Updated: 1 month, 2 weeks ago
160 stars 17 fork 17 watcher
Born at : July 29, 2022, 4:37 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
akircanski/coinbugs

common bugs in L1 blockchain implementations

Updated: 3 years, 6 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 22, 2022, 6:18 p.m. This repo has been linked 8 different CVEs too.
Profile Photo
gnc-project/galaxynetwork

galaxynetwork

Dockerfile Makefile Go Shell NSIS Ruby Python JavaScript HTML Assembly

Updated: 3 years, 8 months ago
1 stars 1 fork 1 watcher
Born at : Sept. 3, 2021, 10:27 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-39137 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-39137 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8
    Added Reference https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 31, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8 No Types Assigned https://github.com/ethereum/go-ethereum/releases/tag/v1.10.8 Third Party Advisory
    Changed Reference Type https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq No Types Assigned https://github.com/ethereum/go-ethereum/security/advisories/GHSA-9856-9gg9-qcmq Third Party Advisory
    Added CWE NIST CWE-436
    Added CPE Configuration OR *cpe:2.3:a:ethereum:go_ethereum:*:*:*:*:*:*:*:* versions from (including) 1.10.0 up to (excluding) 1.10.8
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-39137 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-39137 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.39 }} 0.08%

score

0.59248

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: