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 a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client. The attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks. This issue is patched in version 0.28.0. There are no workarounds.
CVE-2022-23507
This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.3% (20th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.4
- EG Score
- 5.4MEDIUMmedium confidence
- EG Risk
- 24EG Risk 24/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity54% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.3%
- EPSS %ILE
- 21st
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
December 15, 2022
Last Modified
November 21, 2024
References (2)
- security-advisories@githubhttps://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5
- af854a3a-2127-422b-91ae-364da2661108https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5
Affected Packages
(3 across 1 ecosystem)
crates.io(3)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| tendermint-light-client | — |
| — |
| tendermint-light-client-js | — |
| — |
| tendermint-light-client-verifier | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 25× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 172 total refreshes for this CVE.
- 2026-10-10 19:56 UTCEPSS rescore
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- 2026-07-23 02:08 UTCEG score recompute
- 2026-07-22 22:55 UTCEG score recompute
- 2026-07-22 14:06 UTCEPSS rescore
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- 2026-07-05 02:28 UTCEPSS rescore
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2022-23507?
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Is CVE-2022-23507 actively exploited?
What is the CVSS score of CVE-2022-23507?
How do I remediate CVE-2022-23507?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-23507
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