CVE-2026-46539
MEDIUM
5,9
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Description
AI Translation Available
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.
345
Insufficient Verification of Data Authenticity
DraftCommon Consequences
Security Scopes Affected:
Integrity
Other
Potential Impacts:
Varies By Context
Unexpected State
Applicable Platforms
Technologies:
ICS/OT
https://github.com/nimiq/core-rs-albatross/pull/3705
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0
https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-799f-29jm-g…