CVE-2022-23507: Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications

Q: How do I fix CVE-2022-23507?

tendermint-light-client-js: upgrade to 0.28.0; tendermint-light-client-verifier: upgrade to 0.28.0; tendermint-light-client: upgrade to 0.28.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-23507 being exploited?

CVE-2022-23507 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-2022-23507 affect?

CVE-2022-23507 affects tendermint-light-client-js, tendermint-light-client-verifier, tendermint-light-client. Severity is medium (CVSS 5.4). Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the ten

Q: How urgent is CVE-2022-23507?

Priority 30/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.4REMOTEUPGRADEUPGRADEUPGRADE

CVE-2022-23507 is a medium-severity flaw (CVSS 5.4) affecting tendermint-light-client-js, tendermint-light-client-verifier, tendermint-light-client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the tendermint-light-client and related packages to perform light client verification (e.g. IBC-rs, Hermes). The light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-347
Published	2022-12-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tendermint-light-client project · tendermint-light-client-js project · tendermint-light-client-verifier project

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

Am I affected?

Timeline

2022-12-15 19:15 UTCPublished CVE record published
2026-06-17 04:30 UTCUpdated Record last modified

tendermint-light-client-js project tendermint-light-client-js UPGRADE

Affected: < 0.28.0

Fixed in: 0.28.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tendermint-light-client-js || rpm -q tendermint-light-client-js || tendermint-light-client-js --version

2. UPGRADE to 0.28.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tendermint-light-client-js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tendermint-light-client-js

Note

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

tendermint-light-client-verifier project tendermint-light-client-verifier UPGRADE

Affected: < 0.28.0

Fixed in: 0.28.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tendermint-light-client-verifier || rpm -q tendermint-light-client-verifier || tendermint-light-client-verifier --version

2. UPGRADE to 0.28.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tendermint-light-client-verifier

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tendermint-light-client-verifier

Note

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

tendermint-light-client project tendermint-light-client UPGRADE

Affected: < 0.28.0

Fixed in: 0.28.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tendermint-light-client || rpm -q tendermint-light-client || tendermint-light-client --version

2. UPGRADE to 0.28.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tendermint-light-client

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tendermint-light-client

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-2022-23507?

tendermint-light-client-js: upgrade to 0.28.0; tendermint-light-client-verifier: upgrade to 0.28.0; tendermint-light-client: upgrade to 0.28.0. Exact commands for each OS are on this page.

Is CVE-2022-23507 being exploited?

CVE-2022-23507 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-2022-23507 affect?

CVE-2022-23507 affects tendermint-light-client-js, tendermint-light-client-verifier, tendermint-light-client. Severity is medium (CVSS 5.4). Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the ten

How urgent is CVE-2022-23507?

Priority 30/100. Remotely exploitable, no login, no user action

References

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