CVE-2026-46542
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk10th percentile — higher than 10% of all known CVEs
Summary
In versions prior to 1.4.0, Nimiq has a denial-of-service vulnerability in the Ed25519 multisig delinearization code path. The Ed25519PublicKey::delinearize() method calls .unwrap() on curve point decompression, which panics when a public key is not valid.
Risk Assessment
This vulnerability can lead to crashes of the hosting process, resulting in service interruptions and potential financial losses for the organization.
Recommendation
It is recommended to upgrade to version 1.4.0 or later to eliminate this vulnerability and secure the system against denial-of-service attacks.
Original NVD description (English source)
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 .unwrap() on curve point decompression, which panics when a public key is constructed from 32 bytes that do not represent a valid point on the Ed25519 curve. Ed25519PublicKey construction only validates byte length, not curve membership, so invalid keys can reach the delinearization path and crash the hosting process. This issue has been patched in version 1.4.0.