CVE-2020-26242— Denial of service in geth
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I. Basic Information for CVE-2020-26242
Vulnerability Information
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Vulnerability Title
Denial of service in geth
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Ethereum Go-ethereum 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ethereum Go-ethereum是Ethereum社区的一个用Go语言实现以太坊协议的代码库。 Go Ethereum 1.9.18 之前版本存在安全漏洞，该漏洞源于Ethereum协议在块处理期间会出现拒绝服务(崩溃)。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ethereum | go-ethereum | < 1.9.18 | - |
II. Public POCs for CVE-2020-26242
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://blog.ethereum.org/2020/11/12/geth_security_release/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2020-26242
Same Patch Batch · ethereum · 2020-11-25 · 3 CVEs total
| CVE-2020-26241 | 6.5 MEDIUM | Shallow copy bug in geth |
| CVE-2020-26240 | 5.3 MEDIUM | Erroneous Proof of Work calculation in geth |
IV. Related Vulnerabilities
Same product: go-ethereum
- CVE-2026-26315
Go Ethereum Improperly Validates the ECIES Public Key in RLP - CVE-2026-26314
Go Ethereum affected by DoS via malicious p2p message - CVE-2026-26313
Go Ethereum affected by DoS via malicious p2p message - CVE-2026-22868
go-ethereum has a DoS via malicious p2p message - CVE-2026-22862
go-ethereum has a DoS via malicious p2p message
Same vendor: ethereum
- CVE-2026-40072
web3.py affected by SSRF via CCIP Read (EIP-3668) OffchainLo - CVE-2026-26315
Go Ethereum Improperly Validates the ECIES Public Key in RLP - CVE-2026-26314
Go Ethereum affected by DoS via malicious p2p message - CVE-2026-26313
Go Ethereum affected by DoS via malicious p2p message - CVE-2026-22868
go-ethereum has a DoS via malicious p2p message
V. Comments for CVE-2020-26242
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