CVE-2026-40092

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{"affected": [{"affectedData": [{"product": "core-rs-albatross", "vendor": "nimiq", "versions": [{"status": "affected", "version": "< 1.4.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and below, a malicious network peer can crash any Nimiq full node by publishing a crafted Kademlia DHT record. The maliciously crafted record would contain a TaggedSigned<ValidatorRecord, KeyPair> with a signature field whose byte length is not exactly 64 in order to cause a crash. When the victim node's DHT verifier calls TaggedSigned::verify, execution reaches Ed25519Signature::from_bytes(sig).unwrap() in the TaggedPublicKey implementation for Ed25519PublicKey. The from_bytes call fails because ed25519_zebra::Signature::try_from rejects slices not 64 bytes, and the unwrap() panics. The BLS TaggedPublicKey implementation correctly returns false on error; only the Ed25519 implementation panics. This issue has been fixed in version 1.4.0."}, {"lang": "es", "value": "nimiq-blockchain proporciona almacenamiento persistente de bloques para la implementaci\u00f3n en Rust de Nimiq. En las versiones 1.3.0 e inferiores, un par de red malicioso puede colapsar cualquier nodo completo de Nimiq publicando un registro DHT de Kademlia manipulado. El registro manipulado maliciosamente contendr\u00eda un TaggedSigned<ValidatorRecord, KeyPair> con un campo de firma cuya longitud en bytes no es exactamente 64 para causar un colapso. Cuando el verificador DHT del nodo v\u00edctima llama a TaggedSigned::verify, la ejecuci\u00f3n llega a Ed25519Signature::from_bytes(sig).unwrap() en la implementaci\u00f3n de TaggedPublicKey para Ed25519PublicKey. La llamada a from_bytes falla porque ed25519_zebra::Signature::try_from rechaza segmentos que no tienen 64 bytes, y el unwrap() entra en p\u00e1nico. La implementaci\u00f3n BLS de TaggedPublicKey devuelve correctamente 'false' en caso de error; solo la implementaci\u00f3n de Ed25519 entra en p\u00e1nico. Este problema ha sido solucionado en la versi\u00f3n 1.4.0."}], "id": "CVE-2026-40092", "lastModified": "2026-07-23T15:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40092", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-21T12:23:05.311120Z", "version": "2.0.3"}}]}, "published": "2026-05-20T22:16:36.850", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nimiq/core-rs-albatross/commit/807ee8e99a7ccdc604d49971f292854bfa36754d"}, {"source": "security-advisories@github.com", "url": "https://github.com/nimiq/core-rs-albatross/pull/3708"}, {"source": "security-advisories@github.com", "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-27w2-87xv-37c6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-252"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "core-rs-albatross", "source": "cna", "vendor": "nimiq"}, "product": "core-rs-albatross", "vendor": "nimiq"}], "created": "2026-05-20T22:30:40.726571+00:00", "updated": "2026-05-20T22:30:40.997227+00:00", "vendors": ["nimiq", "nimiq$PRODUCT$core-rs-albatross"]}