CVE-2026-26314
Received Received - Intake
Denial of Service in go-ethereum (geth) via Crafted Message

Publication date: 2026-02-19

Last updated on: 2026-02-23

Assigner: GitHub, Inc.

Description
go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, a vulnerable node can be forced to shutdown/crash using a specially crafted message. The problem is resolved in the v1.16.9 and v1.17.0 releases of Geth.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-23
Generated
2026-06-16
AI Q&A
2026-02-20
EPSS Evaluated
2026-06-14
NVD
CVE-2026-26314
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
ethereum go_ethereum to 1.16.9 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 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.
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Executive Summary

The vulnerability exists in go-ethereum (geth), a golang implementation of the Ethereum protocol. Prior to version 1.16.9, a node running a vulnerable version of geth can be forced to shut down or crash by sending it a specially crafted message.

This issue was fixed in versions 1.16.9 and 1.17.0 of geth.

Impact Analysis

An attacker can cause a geth node to unexpectedly shut down or crash by sending a specially crafted message. This can lead to denial of service, disrupting the operation of the Ethereum node.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade your go-ethereum (geth) node to version 1.16.9 or later, as the issue is resolved in versions 1.16.9 and 1.17.0.

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