{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40094", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-09T01:41:38.536Z", "datePublished": "2026-05-20T21:27:40.862Z", "dateUpdated": "2026-05-20T21:27:40.862Z"}, "containers": {"cna": {"title": "nimiq-blockchain: network-libp2p untrusted peer can crash address book via empty peer contact addresses", "problemTypes": [{"descriptions": [{"cweId": "CWE-754", "lang": "en", "description": "CWE-754: Improper Check for Unusual or Exceptional Conditions", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-c45m-6x25-3cjq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-c45m-6x25-3cjq"}, {"name": "https://github.com/nimiq/core-rs-albatross/pull/3715", "tags": ["x_refsource_MISC"], "url": "https://github.com/nimiq/core-rs-albatross/pull/3715"}, {"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": "2026-05-20T21:27:40.862Z"}, "descriptions": [{"lang": "en", "value": "nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and prior, network-libp2p discovery accepts signed PeerContact updates from untrusted peers and stores them in a peer contact book, eventually leading to address book crash. A PeerContact can legally contain an empty addresses list (no intrinsic validation enforces non-empty). Later, PeerContactBook::known_peers builds an address book by taking addresses.first().expect(\"every peer should have at least one address\"). If the attacker has inserted a signed peer contact with addresses=[], any call to get_address_book (RPC/web client) can panic and crash the node/RPC task depending on panic settings. This issue has been fixed in version 1.4.0."}], "source": {"advisory": "GHSA-c45m-6x25-3cjq", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and prior, network-libp2p discovery accepts signed PeerContact updates from untrusted peers and stores them in a peer contact book, eventually leading to address book crash. A PeerContact can legally contain an empty addresses list (no intrinsic validation enforces non-empty). Later, PeerContactBook::known_peers builds an address book by taking addresses.first().expect(\"every peer should have at least one address\"). If the attacker has inserted a signed peer contact with addresses=[], any call to get_address_book (RPC/web client) can panic and crash the node/RPC task depending on panic settings. This issue has been fixed in version 1.4.0."}], "id": "CVE-2026-40094", "lastModified": "2026-05-20T22:16:36.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-20T22:16:36.993", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nimiq/core-rs-albatross/pull/3715"}, {"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-c45m-6x25-3cjq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "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": "2026-05-20T22:30:40.726116+00:00", "updated": "2026-05-20T22:30:40.996607+00:00", "vendors": ["nimiq", "nimiq$PRODUCT$core-rs-albatross"]}