CVE-2020-26265 - CVE House
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Status published Medium CVE-2020-26265

Consensus flaw during block processing

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

go-ethereum
Vulnerable Versions:
>= 1.9.4, < 1.9.20

Timeline

Official Publish: December 11th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Weaknesses (CWE)

CWE-682

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.