CVE-2023-34458: mx-chain-go is the official implementation of the MultiversX blockchain protocol, written in golang

Q: How do I fix CVE-2023-34458?

mx-chain-go: upgrade to 1.4.17. Exact commands for each OS are on this page.

Q: Is CVE-2023-34458 being exploited?

CVE-2023-34458 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-34458 affect?

CVE-2023-34458 affects mx-chain-go. Severity is high (CVSS 7.1). mx-chain-go is the official implementation of the MultiversX blockchain protocol, written in golang. When executing a relayed transaction, if the inner transaction failed, it would have increased the inner transaction's sender account nonce

This month

HIGH 7.1UPGRADE

CVE-2023-34458 is a high-severity flaw (CVSS 7.1) affecting mx-chain-go. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

mx-chain-go is the official implementation of the MultiversX blockchain protocol, written in golang. When executing a relayed transaction, if the inner transaction failed, it would have increased the inner transaction's sender account nonce. This could have contributed to a limited DoS attack on a targeted account. The fix is a breaking change so a new flag `RelayedNonceFixEnableEpoch` was needed. This was a strict processing issue while validati

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-400
Published	2023-07-13
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: multiversx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-07-13 19:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

multiversx mx-chain-go UPGRADE

Affected: < 1.4.17

Fixed in: 1.4.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mx-chain-go || rpm -q mx-chain-go || mx-chain-go --version

2. UPGRADE to 1.4.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mx-chain-go

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mx-chain-go

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-34458?

mx-chain-go: upgrade to 1.4.17. Exact commands for each OS are on this page.

Is CVE-2023-34458 being exploited?

CVE-2023-34458 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-34458 affect?

CVE-2023-34458 affects mx-chain-go. Severity is high (CVSS 7.1). mx-chain-go is the official implementation of the MultiversX blockchain protocol, written in golang. When executing a relayed transaction, if the inner transaction failed, it would have increased the inner transaction's sender account nonce

How urgent is CVE-2023-34458?

Priority 43/100. High severity

Software pages

Go (Golang) vulnerabilities

References

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