Denial-of-Service Vulnerability in Nimiq's Proof-of-Stake Protocol
CVE-2026-46545

7.5HIGH

Key Information:

Vendor

Nimiq

Status
Core-rs-albatross
Vendor
CVE Published:
9 June 2026

What is CVE-2026-46545?

A remote, unauthenticated denial-of-service vulnerability was identified in Nimiq's Proof-of-Stake protocol, specifically within the MerkleRadixTrie::put_chunk function. This flaw allows any state-sync peer to crash nodes that are performing state synchronization, particularly affecting freshly joining and recovering nodes. The issue has been effectively mitigated in version 1.5.0.

Affected Version(s)

core-rs-albatross < 1.5.0

References

https://github.com/nimiq/core-rs-albatross/security/advis...
x_refsource_CONFIRM
https://github.com/nimiq/core-rs-albatross/pull/3762
x_refsource_MISC
https://github.com/nimiq/core-rs-albatross/releases/tag/v...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.