CVE-2022-29219: Lodestar is a TypeScript implementation of the Ethereum Consensus specification

Q: How do I fix CVE-2022-29219?

lodestar: upgrade to 0.36.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-29219 being exploited?

CVE-2022-29219 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-2022-29219 affect?

CVE-2022-29219 affects lodestar. Severity is high (CVSS 7.5). Lodestar is a TypeScript implementation of the Ethereum Consensus specification. Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain. Becaus

Q: How urgent is CVE-2022-29219?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2022-29219 is a high-severity flaw (CVSS 7.5) affecting lodestar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Lodestar is a TypeScript implementation of the Ethereum Consensus specification. Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain. Because the developers represent `uint64` values as native javascript `number`s, there is an issue when those variables with large (greater than 2^53) `uint64` values are included on chain. In those cases, Lodestar m

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-190
Published	2022-05-24
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2022-05-24 15:15 UTCPublished CVE record published
2026-06-17 04:39 UTCUpdated Record last modified

chainsafe lodestar UPGRADE

Affected: < 0.36.0

Fixed in: 0.36.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lodestar || rpm -q lodestar || lodestar --version

2. UPGRADE to 0.36.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lodestar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lodestar

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-2022-29219?

lodestar: upgrade to 0.36.0. Exact commands for each OS are on this page.

Is CVE-2022-29219 being exploited?

CVE-2022-29219 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-2022-29219 affect?

CVE-2022-29219 affects lodestar. Severity is high (CVSS 7.5). Lodestar is a TypeScript implementation of the Ethereum Consensus specification. Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain. Becaus

How urgent is CVE-2022-29219?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

References

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