CVE-2020-26265

Consensus flaw during block processing

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: ethereum go-ethereum
Published at:
Updated at:

References

Link Tags
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4 third party advisory
https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-26265?
CVE-2020-26265 has been scored as a medium severity vulnerability.
How to fix CVE-2020-26265?
To fix CVE-2020-26265, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-26265 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-26265 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-26265?
CVE-2020-26265 affects ethereum go-ethereum.
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