Nimiq: Validity store off by one error
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Through 1.5.0, the validity store uses a strict lower-bound comparison that expires a stored transaction too early relative to Transaction::is_valid_at, allowing a remote attacker to replay the same signed transaction during a blocks_per_batch minus one block window and cause the sender and recipient balances to be updated twice. This issue is fixed in version 1.5.1.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-46369
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 23:42 UTC · Revision 1
Source evidence
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Through 1.5.0, the validity store uses a strict lower-bound comparison that expires a stored transaction too early relative to Transaction::is_valid_at, allowing a remote attacker to replay the same signed transaction during a blocks_per_batch minus one block window and cause the sender and recipient balances to be updated twice. This issue is fixed in version 1.5.1.
osv:CVE-2026-46369
Complete source record
{
"id": "6478da1cdc1eb286def2e7dc4fdbf7c2ef344976c60f3b44c04764479020dfca",
"url": "https://osv.dev/vulnerability/CVE-2026-46369",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Nimiq: Validity store off by one error",
"summary": "Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Through 1.5.0, the validity store uses a strict lower-bound comparison that expires a stored transaction too early relative to Transaction::is_valid_at, allowing a remote attacker to replay the same signed transaction during a blocks_per_batch minus one block window and cause the sender and recipient balances to be updated twice. This issue is fixed in version 1.5.1.",
"evidence": "osv:CVE-2026-46369",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-46369",
"aliases": [
"CVE-2026-46369",
"GHSA-3763-qp59-59vf"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nimiq/core-rs-albatross",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "b661fcf7e7fc1b6bee40d8586ea809780e4cf665"
},
{
"fixed": "a530b2434ebca6e3716f07c73079786fcc6f2e41"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.5.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "a530b2434ebca6e3716f07c73079786fcc6f2e41"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v1.5.0",
"v1.4.0",
"v1.3.0",
"v1.2.2",
"v1.2.1",
"v1.2.0",
"v1.1.1",
"v1.1.0",
"v1.0.9",
"v1.0.8",
"v1.0.7",
"v1.0.6",
"v1.0.5",
"v1.0.4",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0",
"v1.0.0-rc.5",
"v1.0.0-rc.4",
"v1.0.0-rc.3",
"v1.0.0-rc.2",
"v1.0.0-rc.1",
"v1.0.0-rc.0",
"v0.24.4",
"v0.24.3",
"v0.24.2",
"v0.24.1",
"v0.24.0",
"v0.23.0",
"v0.22.3",
"v0.22.2",
"v0.22.1",
"v0.22.0",
"v0.21.1",
"v0.21.0",
"v0.20.5",
"v0.20.4",
"v0.20.3",
"v0.20.2",
"v0.20.1",
"v0.20.0",
"v0.19.0",
"v0.18.0",
"v0.17.0",
"v0.16.1",
"v0.16.0",
"v0.15.0",
"v0.14.0",
"v0.13.1",
"v0.13.0",
"v0.12.1",
"v0.12.0",
"v0.11.5",
"v0.11.4",
"v0.11.3",
"v0.11.2",
"v0.11.1",
"v0.11.0",
"v0.10.0",
"v0.9.0",
"v0.8.3",
"v0.8.2",
"v0.8.1",
"v0.8.0",
"v0.7.0",
"v0.6.0",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.1",
"v0.4.0",
"v0.3.3",
"v0.3.2",
"v0.3.1",
"v0.3.0",
"v0.2.2",
"v0.2.1",
"v0.2.0",
"v0.1.0",
"v0.1.0-rc.3",
"v0.1.0-rc.2",
"v0.1.0-rc.1",
"v0.1.0-rc.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46369.json"
}
}
],
"modified": "2026-10-28T02:30:40.581657014Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46369.json",
"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-3763-qp59-59vf",
"https://nvd.nist.gov/vuln/detail/CVE-2026-46369",
"https://github.com/nimiq/core-rs-albatross/commit/a530b2434ebca6e3716f07c73079786fcc6f2e41",
"https://github.com/nimiq/core-rs-albatross/pull/3772"
],
"provider_metadata": {
"cwe_ids": [
"CWE-193",
"CWE-294"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46369.json"
}
},
"related_cves": [
{
"value": "CVE-2026-46369",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 508074,
"published_at": "2026-08-26T19:32:46.025+00:00"
}