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    CVE-2020-26265

    Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version.

    Published:Dec 11, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 11, 2020
    EPSS Score:0.00183
    CVSS Score:5.3

    Affected Products

    Vendor
    Ethereum
    Product
    Go Ethereum

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-682 Incorrect Calculation

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-128 Integer Attacks
    CAPEC-129 Pointer Manipulation

    Related CVEs

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    CVE-2026-22868 (CVSS 7.1) — go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. A vulnerable node can …
    CVE-2026-22862 (CVSS 7.1) — go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. A vulnerable node can …
    CVE-2025-24883 (CVSS 8.7) — go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. A vulnerable node can …
    CVE-2024-32972 (CVSS 7.5) — go-ethereum (geth) is a golang execution layer implementation of the Ethereum protocol. Prior to 1.13.15, a vu…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High