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Vulnerability record · CVE-2020-26242 · published 25 November 2020

CVE-2020-26242: Go ethereum vulnerability

Ethereum · Go Ethereum

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.

7.5 CVSS 3.1 High EPSS 1.5% · top 27.1%
7.5CVSS 3.1 base score, v2 5.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.ethereum.org/2020/11/12/geth_security_release/ Vendor Advisory
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-jm5c-rv3w-w83m Third Party Advisory
https://blog.ethereum.org/2020/11/12/geth_security_release/ Vendor Advisory
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-jm5c-rv3w-w83m Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-26242), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.