CVE-2026-26314

Go Ethereum affected by DoS via malicious p2p message

State: Published
Severity: 8.7 High
Published: Feb 19, 2026
Updated: Feb 20, 2026
Reserved: Feb 13, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	GitHub_M

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
go-ethereumethereum	< 1.16.9Affected

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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.