nimiq-blockchain: Genesis batch set request
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with "No macro blocks before genesis block". This issue has been patched in version 1.5.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-46543
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:36 UTC · Revision 1
Source evidence
nimiq-blockchain: Genesis batch set request
core-osv · Original sourcePublished 9 Jun 2026, 23:47 UTC
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with "No macro blocks before genesis block". This issue has been patched in version 1.5.0.
osv:CVE-2026-46543
Complete source record
{
"id": "422469c5d1609609412328842029641dc67b4a7b82885a4ece23829516ead90c",
"url": "https://osv.dev/vulnerability/CVE-2026-46543",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "nimiq-blockchain: Genesis batch set request",
"summary": "Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.",
"evidence": "osv:CVE-2026-46543",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-46543",
"aliases": [
"CVE-2026-46543",
"GHSA-vghx-352f-93jm"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nimiq/core-rs-albatross",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "a3df2732d26a891a7f69815ff4032380f2f7d536"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.5.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "a3df2732d26a891a7f69815ff4032380f2f7d536"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.5.0"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.5.0"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46543.json"
}
}
],
"modified": "2026-10-28T02:30:21.062618582Z",
"provider": "osv",
"references": [
"https://github.com/nimiq/core-rs-albatross/releases/tag/v1.5.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46543.json",
"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vghx-352f-93jm",
"https://nvd.nist.gov/vuln/detail/CVE-2026-46543",
"https://github.com/nimiq/core-rs-albatross/pull/3745"
],
"provider_metadata": {
"cwe_ids": [
"CWE-617"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46543.json"
}
},
"related_cves": [
{
"value": "CVE-2026-46543",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 487220,
"published_at": "2026-06-09T23:47:32.019+00:00"
}