CVE-2026-26313 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 1.17.0, an attacker can cause high memory usage by sending a specially-crafted p2p message. The issue is resolved in the v1.17.0 release.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 6.9

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	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	ethereum
Product	go-ethereum
Versions	Version < 1.17.0 is affected

References

https://github.com/ethereum/go-ethereum/security/advisories/GHSA-689v-6xwf-5jf3
https://github.com/ethereum/go-ethereum/releases/tag/v1.17.0

Problem Types

CWE-770: Allocation of Resources Without Limits or Throttling CWE