CVE-2026-26314 PUBLISHED

Go Ethereum affected by DoS via malicious p2p message

Assigner: GitHub_M
Reserved: 13.02.2026 Published: 19.02.2026 Updated: 19.02.2026

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.

Metrics

CVSS 4.0

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
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	ethereum
Product	go-ethereum
Versions	Version < 1.16.9 is affected

References

https://github.com/ethereum/go-ethereum/security/advisories/GHSA-2gjw-fg97-vg3r
https://github.com/ethereum/go-ethereum/commit/895a8597cb16c02203e38707ed2d1da5c500fe60
https://github.com/ethereum/go-ethereum/releases/tag/v1.16.9

Problem Types

CWE-20: Improper Input Validation CWE