CVE-2020-26242: Ethereum Go Ethereum

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.18, there is a Denial-of-service (crash) during block processing. This is fixed in 1.9.18.

Affected products

• Ethereum Go Ethereum: before 1.9.18 (fixed in 1.9.18)

Published 2020-11-25. Last modified 2026-06-17.