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 getepochchunks which iterates backwards through macro blocks using Policy::macroblockbefore. When it reaches the genesis block number, macroblockbefore panics with "No macro blocks before genesis block". This issue has been patched in version 1.5.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-617"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46543.json"
}