CVE-2026-34068

nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation. Prior to version 1.3.0, the staking contract accepts UpdateValidator transactions that set newvotingkey=Some... while omitting newproofofknowledge. this skips the proof-of-knowledge requirement that is...

CVE-2026-34068 nimiq-transaction: UpdateValidator transactions allows voting key change without proof-of-knowledge

nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation. Prior to version 1.3.0, the staking contract accepts UpdateValidator transactions that set newvotingkey=Some... while omitting newproofofknowledge. this skips the proof-of-knowledge requirement that is...

CVE-2026-34068

Summary (CVE-2026-34068) Nimiq-transaction’s staking contract (Rust) prior to v1.3.0 accepts UpdateValidator transactions that set new_voting_key=Some(...) without including new_proof_of_knowledge, bypassing the PoK requirement used to prevent BLS rogue-key attacks in aggregated signatures. Since...

nimiq-transaction: UpdateValidator transactions allows voting key change without proof-of-knowledge

Impact The staking contract accepts UpdateValidator transactions that set newvotingkey=Some... while omitting newproofofknowledge. this skips the proof-of-knowledge requirement that is needed to prevent BLS rogue-key attacks when public keys are aggregated. Because tendermint macro block...