Is CVE-2026-34067 actively exploited?

No active exploitation of CVE-2026-34067 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34067 be exploited remotely?

Yes. CVE-2026-34067 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34067?

CVE-2026-34067 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-34067

CWE-617Published: April 22, 2026· Updated: Apr 24, 2026

6.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.2th

Official Description

nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation. Prior to version 1.3.0, `HistoryTreeProof::verify` panics on a malformed proof where `history.len() != positions.len()` due to `assert_eq!(history.len(), positions.len())`. The proof object is derived from untrusted p2p responses (`ResponseTransactionsProof.proof`) and is therefore attacker-controlled at the network boundary until validated. A malicious peer could trigger a crash by returning a crafted inclusion proof with a length mismatch. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2026-34067 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.