{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40092", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-09T00:39:12.206Z", "datePublished": "2026-05-20T21:16:40.805Z", "dateUpdated": "2026-05-20T21:16:40.805Z"}, "containers": {"cna": {"title": "nimiq-keys: Unchecked Ed25519 signature length in TaggedPublicKey::verify causes remote node panic via DHT", "problemTypes": [{"descriptions": [{"cweId": "CWE-252", "lang": "en", "description": "CWE-252: Unchecked Return Value", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-27w2-87xv-37c6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-27w2-87xv-37c6"}, {"name": "https://github.com/nimiq/core-rs-albatross/pull/3708", "tags": ["x_refsource_MISC"], "url": "https://github.com/nimiq/core-rs-albatross/pull/3708"}, {"name": "https://github.com/nimiq/core-rs-albatross/commit/807ee8e99a7ccdc604d49971f292854bfa36754d", "tags": ["x_refsource_MISC"], "url": "https://github.com/nimiq/core-rs-albatross/commit/807ee8e99a7ccdc604d49971f292854bfa36754d"}, {"name": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"}], "affected": [{"vendor": "nimiq", "product": "core-rs-albatross", "versions": [{"version": "< 1.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-20T21:16:40.805Z"}, "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."}], "source": {"advisory": "GHSA-27w2-87xv-37c6", "discovery": "UNKNOWN"}}}}

{}

{"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."}], "id": "CVE-2026-40092", "lastModified": "2026-05-20T22:16:36.850", "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"}]}, "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-252"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"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"]}