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CVE-2026-46542

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

Published: Jun 9, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-617
4.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 86.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-617

Affected Products

nimiq
oss-projectaka network-libp2p, nimiq proof-of-stake
core-rs-albatrossMixed
OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
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References

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
github.com

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