TI-2026-34221 Aliases CVE-2026-46542 GHSA-h9cc-w26m-j342

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

LOW 20CWE-617Published 2026-06-09 · Updated 2026-06-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-617.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00231 14th percentileScored 2026-11-07

Fix Fixed core-rs-albatross (nimiq): 1.4.0nimiq-keys (crates.io): 1.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nimiq	core-rs-albatross	before 1.4.0	1.4.0	Patch available	CNA
—	nimiq-keys (crates.io)	before 1.4.0	1.4.0	Patch available	GHSA-h9cc-w26m-j342

core-rs-albatross Vendornimiq Affected before 1.4.0 Fixed in 1.4.0 Patch available CNA
nimiq-keys (crates.io) Vendor— Affected before 1.4.0 Fixed in 1.4.0 Patch available GHSA-h9cc-w26m-j342

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:nimiq:nimiq_proof-of-stake::::::::	—	—	nimiq

cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:*:*:* Versions — — ·nimiq

Remediation

Fix · CNA core-rs-albatross (nimiq) Fixed in 1.4.0
Fix · GHSA-h9cc-w26m-j342 nimiq-keys (crates.io) Fixed in 1.4.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-46542
2026-10-03 Alias added: GHSA-h9cc-w26m-j342

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-46542

Other 5

TI-2026-26389 nimiq-account: Vesting insufficient funds error can panic CVSS 3.1HIGH 8.2
TI-2026-25867 nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation CVSS 3.1CRITICAL 9.6
TI-2026-34086 Nimiq: Validity store off by one error CVSS 3.1HIGH 7.5
TI-2026-28920 nimiq-keys: Unchecked Ed25519 signature length in TaggedPublicKey::verify causes remote node panic via DHT CVSS 3.1HIGH 7.5
TI-2025-29800 nimiq-network-libp2p Uncontrolled Resource Consumption vulnerability CVSS 3.1HIGH 7.5
TI-2026-34224 nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item CVSS 3.1HIGH 7.5

See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences