Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, a logic flaw in BlockInclusionProof::is_block_proven causes the function to return true without performing any cryptographic verification when get_interlink_hops yields an empty hop list. This occurs when the target block is at the election block position immediately preceding the election head's epoch. An attacker providing transaction inclusion proofs can forge a MacroBlock header for that epoch position and have it accepted as "proven" without any hash or signature verification. This issue has been patched in version 1.4.0.
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Wed, 10 Jun 2026 15:30:00 +0000
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Wed, 10 Jun 2026 02:30:00 +0000
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Nimiq
Nimiq core-rs-albatross |
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Nimiq core-rs-albatross |
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| Description | Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, a logic flaw in BlockInclusionProof::is_block_proven causes the function to return true without performing any cryptographic verification when get_interlink_hops yields an empty hop list. This occurs when the target block is at the election block position immediately preceding the election head's epoch. An attacker providing transaction inclusion proofs can forge a MacroBlock header for that epoch position and have it accepted as "proven" without any hash or signature verification. This issue has been patched in version 1.4.0. | |
| Title | nimiq-primitives: BlockInclusionProof interlink issue when hops are empty | |
| Weaknesses | CWE-345 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-06-09T23:44:34.283Z
Updated: 2026-06-10T14:36:28.257Z
Reserved: 2026-05-14T20:42:31.368Z
Link: CVE-2026-46539
Updated: 2026-06-10T14:36:21.653Z
Status : Received
Published: 2026-06-10T00:16:54.097
Modified: 2026-06-10T00:16:54.097
Link: CVE-2026-46539
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