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vuln-cve/data/2026/40xxx/CVE-2026-40092.json
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{
"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": "2026-05-21T12:23:18.024Z"
},
"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"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-21T12:23:05.311120Z",
"id": "CVE-2026-40092",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-05-21T12:23:18.024Z"
}
}
]
}
}