CVE-2026-46542 nimiq-keys: Denial of service in Ed25519 multisig delinearization via invalid curve points

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 denial-of-service vulnerability exists in the Ed25519 multisig delinearization code path. Ed25519PublicKey::delinearize in keys/src/multisig/mod.rs called...

PT-2026-42670

Name of the Vulnerable Software and Affected Versions Nimiq versions prior to 1.4.0 Description A denial-of-service issue exists in the Ed25519 multisig delinearization code path. The function Ed25519PublicKey::delinearize in keys/src/multisig/mod.rs uses .unwrap during curve point decompression,...