CVE-2026-26314 HIGH

CVE-2026-26314: Go Ethereum affected by DoS via malicious p2p message

Vendor Ethereum
Product go-ethereum
Weakness CWE-20 · Input validation
Published February 19, 2026
Last update February 20, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 19, 2026 CVE published
February 20, 2026 Record updated