CVE-2026-46540— Nimiq 安全漏洞

Nimiq light-blockchain: Light blockchain rebranch issue

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch() adopts a fork chain whose tip is a macro block (checkpoint or election), it only updates self.head but fails to update self.macro_head, self.election_head, self.current_validators, or store the election header in the chain_store. This is in direct contrast with the full Blockchain::rebranch() at blockchain/src/blockchain/push.rs:504-518, which correctly updates all macro/election state when the new head is a macro block. After a rebranch to a macro block, the stale macro_head causes subsequent macro blocks pushed via push() to be verified against the wrong predecessor via verify_macro_successor(&this.macro_head). If the rebranch target was an election block, the stale current_validators causes every subsequent block to fail verify_validators(), completely stalling the light client's chain progression. This issue has been patched in version 1.4.0.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

行为工作流的不恰当实施

Nimiq 安全漏洞

Nimiq是Nimiq开源的一个Albatross协议的Rust实现。 Nimiq 1.4.0之前版本存在安全漏洞，该漏洞源于LightBlockchain::rebranch()在采用分叉链时仅更新self.head但未更新self.macro_head、self.election_head、self.current_validators或存储选举头，导致后续宏块验证错误。

N/A

N/A