Is CVE-2026-34061 actively exploited?

No active exploitation of CVE-2026-34061 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34061 be exploited remotely?

Yes. CVE-2026-34061 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34061?

CVE-2026-34061 has a CVSS score of 4.9 (MEDIUM).

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MEDIUM

CVE-2026-34061

CWE-345Published: April 3, 2026· Updated: Apr 7, 2026

4.9

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:4.2th

Official Description

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, an elected validator proposer can send an election macro block whose header.interlink does not match the canonical next interlink. Honest validators accept that proposal in verify_macro_block_proposal() because the proposal path validates header shape, successor relation, proposer, body root, and state, but never checks the interlink binding for election blocks. The same finalized block is later rejected by verify_block() during push with InvalidInterlink. Because validators prevote and precommit the malformed header hash itself, the failure happens after Tendermint decides the block, not before voting. This issue has been patched in version 1.3.0.

NVD Source

Technical Analysis

CVE-2026-34061 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.9.