Vulnerability · Published Feb 19, 2026 · Assigned by GitHub_M
CVE-2026-26314Go Ethereum affected by DoS via malicious p2p message
High 8.7
In plain English
A high-severity improper input validation in go-ethereum from ethereum. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.7%top 48.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | geth | 1.17.0-r0 | ALPINE-CVE-2026-26314 |
| Alpine:v3.24 | geth | 1.17.0-r0 | ALPINE-CVE-2026-26314 |
| Go | github.com/ethereum/go-ethereum | 1.16.9 | GHSA-2gjw-fg97-vg3r |
| Go | github.com/ethereum/go-ethereum | 1.16.9 | GO-2026-4507 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ethereum | go-ethereum | < 1.16.9 |
Weakness: CWE-20 · 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