CVE-2020-26264

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    CVE-2020-26264

    Published: 11 Dec 2020Last Modified: 7 Aug 2026

    Summary:

    Details: Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.25 a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit. The vulnerability was patched in version 1.9.25.

    References: https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25, https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q, https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46, https://github.com/ethereum/go-ethereum/pull/21896

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e7872729012a4871397307b12cc3f4772ffcbec6

    Affected versions

    v1.9.24
    v1.9.23
    v1.9.22
    v1.9.21
    v1.9.20
    v1.9.19
    v1.9.18
    v1.9.17
    v1.9.16
    v1.9.15
    v1.9.14
    v1.9.13
    v1.9.12
    v1.9.11
    v1.9.10
    v1.9.9
    v1.9.8
    v1.9.7
    v1.9.6
    v1.9.5
    v1.9.4
    v1.9.3
    v1.9.2
    v1.9.1
    v1.9.0

    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
    CVE-2020-26264 | CVE-DB