{"api_version":"1","generated_at":"2026-07-23T14:27:25+00:00","cve":"CVE-2021-45698","urls":{"html":"https://cve.report/CVE-2021-45698","api":"https://cve.report/api/cve/CVE-2021-45698.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-45698","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-45698"},"summary":{"title":"CVE-2021-45698","description":"An issue was discovered in the ckb crate before 0.40.0 for Rust. A get_block_template RPC call may fail in situations where it is supposed to select a Nervos CKB blockchain transaction with a higher fee rate than another transaction.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-12-27 00:15:00","updated_at":"2022-01-06 19:30:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0107.md","name":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0107.md","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"404"},{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0107.html","name":"https://rustsec.org/advisories/RUSTSEC-2021-0107.html","refsource":"MISC","tags":[],"title":"RUSTSEC-2021-0107: ckb: Miner fails to get block template when a cell used as a cell dep has been destroyed. › RustSec Advisory Database","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-45698","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45698","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"45698","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"nervos","cpe5":"ckb","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"rust","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-45698","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue was discovered in the ckb crate before 0.40.0 for Rust. A get_block_template RPC call may fail in situations where it is supposed to select a Nervos CKB blockchain transaction with a higher fee rate than another transaction."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0107.html","refsource":"MISC","name":"https://rustsec.org/advisories/RUSTSEC-2021-0107.html"},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0107.md","refsource":"MISC","name":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ckb/RUSTSEC-2021-0107.md"}]}},"nvd":{"publishedDate":"2021-12-27 00:15:00","lastModifiedDate":"2022-01-06 19:30:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:nervos:ckb:*:*:*:*:*:rust:*:*","versionEndExcluding":"0.40.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"45698","Ordinal":"224072","Title":"CVE-2021-45698","CVE":"CVE-2021-45698","Year":"2021"},"notes":[]}}}