CVE-2026-46542

MEDIUM 4.3

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

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-617
Vendor	nimiq
Product	core-rs-albatross
Published	Jun 9, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

nimiq / core-rs-albatross

< 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-h9cc-w26m-j342 github.com: https://github.com/nimiq/core-rs-albatross/pull/3713 github.com: https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0