CVE-2026-26313: Github.com/ethereum/go ethereum Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-689v-6xwf-5jf3
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CWE-770
Published
Advisory Summary

CVE-2026-26313 is a MODERATE denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Github.com/ethereum/go ethereum libraries in the Go ecosystem. The issue involves go ethereum affected by dos via malicious p2p message. Remediation is available by upgrading affected packages to version 1.17.0.

CVE-2026-26313 at a Glance

CVE Identifier CVE-2026-26313
GHSA Identifier GHSA-689v-6xwf-5jf3
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Github.com/ethereum/go ethereum
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-26313

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: 1.17.0 
Upgrade github.com/ethereum/go-ethereum to 1.17.0
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-2026-26313, 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 1.17.0), 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-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. 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 An attacker can cause high memory usage by sending a specially-crafted p2p message. More details to be released later. ### Patches The issue is resolved in the v1.17.0 release. ### Credit This issue was reported to the Ethereum Foundation Bug Bounty Program by @revofusion

CVE-2026-26313 Affected Github.com/ethereum/go ethereum Versions

1 component(s)
Fixed Versions:
1.17.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/ethereum/go-ethereum
golang/github.com/ethereum/go-ethereum
Go
< 1.17.0
1.17.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-689v-6xwf-5jf3
NVD — CVE-2026-26313 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26313
Github.com/ethereum/go ethereum Source Repository REPOSITORY
https://github.com/ethereum/go-ethereum
Github.com/ethereum/go ethereum Release RELEASE
https://github.com/ethereum/go-ethereum/releases/tag/v1.17.0
pkg.go.dev/vuln/go-2026-4508 WEB
https://pkg.go.dev/vuln/GO-2026-4508

Frequently Asked Questions

What is CVE-2026-26313?
CVE-2026-26313 is a security vulnerability in Github.com/ethereum/go ethereum involving Go Ethereum affected by DoS via malicious p2p message under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Github.com/ethereum/go ethereum versions are affected?
Affected versions include releases prior to 1.17.0 across affected packages: github.com/ethereum/go-ethereum.
What version fixes CVE-2026-26313?
Upgrading to 1.17.0 (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 1.17.0. Upgrade your dependency to 1.17.0 or later.
What CWE is associated with CVE-2026-26313?
CVE-2026-26313 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check Go dependencies for CVE-2026-26313?
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-689v-6xwf-5jf3",
  "modified" : "2026-02-27T20:38:21Z",
  "published" : "2026-02-18T22:34:49Z",
  "aliases" : [ "CVE-2026-26313" ],
  "summary" : "Go Ethereum affected by DoS via malicious p2p message",
  "details" : "### Impact\n\nAn attacker can cause high memory usage by sending a specially-crafted p2p message.\nMore details to be released later.\n\n### Patches\n\nThe issue is resolved in the v1.17.0 release. \n\n### Credit\n\nThis issue was reported to the Ethereum Foundation Bug Bounty Program by @revofusion",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ethereum/go-ethereum"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.17.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ethereum/go-ethereum/security/advisories/GHSA-689v-6xwf-5jf3"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-26313"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ethereum/go-ethereum"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ethereum/go-ethereum/releases/tag/v1.17.0"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2026-4508"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-18T22:34:49Z",
    "nvd_published_at" : "2026-02-19T21:18:31Z"
  }
}