CVE-2026-26314
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ethereum | go_ethereum | to 1.16.9 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.