CVE-2026-46543

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.

• CWE-617

• https://github.com/nimiq/core-rs-albatross/pull/3745
• https://github.com/nimiq/core-rs-albatross/releases/tag/v1.5.0
• https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vghx-352f-93jm

Published

Jun 10, 2026

Last Modified

Jul 23, 2026

Status

Deferred

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