{"cve":"CVE-2022-23507","nvd":{"published":"2022-12-15T19:15:16.723","modified":"2026-06-17T04:30:15.717","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-347"],"references":["https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5","https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5"],"products":["tendermint-light-client-js_project:tendermint-light-client-js","tendermint-light-client-verifier_project:tendermint-light-client-verifier","tendermint-light-client_project:tendermint-light-client"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2022-23507","score":0.00316,"percentile":0.24565,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xqqc-c5gw-c5r5","url":"https://osv.dev/vulnerability/GHSA-xqqc-c5gw-c5r5","summary":"Tendermint light client verification not taking into account chain ID","modified":"2023-11-08T04:08:19.879804Z","packages":[{"ecosystem":"crates.io","name":"tendermint-light-client-verifier","purl":"pkg:cargo/tendermint-light-client-verifier","ranges":["<0.28.0"],"fixed":["0.28.0"]},{"ecosystem":"crates.io","name":"tendermint-light-client","purl":"pkg:cargo/tendermint-light-client","ranges":["<0.28.0"],"fixed":["0.28.0"]},{"ecosystem":"crates.io","name":"tendermint-light-client-js","purl":"pkg:cargo/tendermint-light-client-js","ranges":["<0.28.0"],"fixed":["0.28.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}