CVE-2020-26242
Denial of service in geth
HIGH
7.5
CVSS Score
Published: November 25, 2020 at 01:25 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
1 product affected across 1 vendorGo Ethereum
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.9.18
Affected range stops below 1.9.18, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://blog.ethereum.org/2020/11/12/geth_security_release/x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-jm5c-rv3w-w83mCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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