CVE-2026-22862: Github.com/ethereum/go ethereum Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-mr7q-c9w9-wh4h
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CWE-20
Published
Advisory Summary

CVE-2026-22862 is a HIGH denial of service vulnerability (CWE-20: Improper Input Validation) affecting Github.com/ethereum/go ethereum libraries in the Go ecosystem. The issue involves go-ethereum is vulnerable to dos via malicious p2p message affecting a vulnerable node. Remediation is available by upgrading affected packages to version 1.16.8.

CVE-2026-22862 at a Glance

CVE Identifier CVE-2026-22862
GHSA Identifier GHSA-mr7q-c9w9-wh4h
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-20: Improper Input Validation
Affected Product Github.com/ethereum/go ethereum
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-22862

To remediate this vulnerability, upgrade all affected Github.com/ethereum/go ethereum dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/ethereum/go-ethereum fixed: 1.16.8 
Upgrade github.com/ethereum/go-ethereum to 1.16.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/ethereum/go-ethereum

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-22862, inspect your project dependencies for Github.com/ethereum/go ethereum:

inspect dependencies for github.com/ethereum/go-ethereum

Analyze the terminal output to locate any version of Github.com/ethereum/go ethereum in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.16.8), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Github.com/ethereum/go ethereum, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

**Impact** A vulnerable node can be forced to shutdown/crash using a specially crafted message. More details to be released later. **Credit** This issue was reported to the Ethereum Foundation Bug Bounty Program by DELENE TCHIO ROMUALD.

CVE-2026-22862 Affected Github.com/ethereum/go ethereum Versions

1 component(s)
Fixed Versions:
1.16.8
Product / Package Ecosystem Affected Versions Fixed Version
github.com/ethereum/go-ethereum
golang/github.com/ethereum/go-ethereum
Go
< 1.16.8
1.16.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-mr7q-c9w9-wh4h
NVD — CVE-2026-22862 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22862
Security Fix Commit FIX COMMIT
https://github.com/ethereum/go-ethereum/commit/abeb78c647e354ed922726a1d719ac7bc64a07e2
Github.com/ethereum/go ethereum Source Repository REPOSITORY
https://github.com/ethereum/go-ethereum

Frequently Asked Questions

What is CVE-2026-22862?
CVE-2026-22862 is a security vulnerability in Github.com/ethereum/go ethereum involving go-ethereum is vulnerable to DoS via malicious p2p message affecting a vulnerable node under CWE-20: Improper Input Validation.
Which Github.com/ethereum/go ethereum versions are affected?
Affected versions include releases prior to 1.16.8 across affected packages: github.com/ethereum/go-ethereum.
What version fixes CVE-2026-22862?
Upgrading to 1.16.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/ethereum/go-ethereum affected?
Yes, github.com/ethereum/go-ethereum is affected in releases prior to 1.16.8. Upgrade your dependency to 1.16.8 or later.
What CWE is associated with CVE-2026-22862?
CVE-2026-22862 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Go dependencies for CVE-2026-22862?
Run the dependency tree command: 'inspect dependencies for github.com/ethereum/go-ethereum'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mr7q-c9w9-wh4h",
  "modified" : "2026-01-13T21:55:12Z",
  "published" : "2026-01-13T21:55:12Z",
  "aliases" : [ "CVE-2026-22862" ],
  "summary" : "go-ethereum is vulnerable to DoS via malicious p2p message affecting a vulnerable node",
  "details" : "**Impact**\n\nA vulnerable node can be forced to shutdown/crash using a specially crafted message. \nMore details to be released later.\n\n**Credit**\n\nThis issue was reported to the Ethereum Foundation Bug Bounty Program by DELENE TCHIO ROMUALD.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ethereum/go-ethereum"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.16.8"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.16.7"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-mr7q-c9w9-wh4h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22862"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ethereum/go-ethereum/commit/abeb78c647e354ed922726a1d719ac7bc64a07e2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ethereum/go-ethereum"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-13T21:55:12Z",
    "nvd_published_at" : "2026-01-13T21:15:54Z"
  }
}