Is CVE-2026-28402 actively exploited?

No active exploitation of CVE-2026-28402 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28402 be exploited remotely?

Yes. CVE-2026-28402 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28402?

CVE-2026-28402 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-28402

CWE-354Published: February 27, 2026· Updated: Mar 2, 2026

7.1

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:4.5th

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 1.2.2, a malicious or compromised validator that is elected as proposer can publish a macro block proposal where `header.body_root` does not match the actual macro body hash. The proposal can pass proposal verification because the macro proposal verification path validates the header but does not validate the binding `body_root == hash(body)`; later code expects this binding and may panic on mismatch, crashing validators. Note that the impact is only for validator nodes. The patch for this vulnerability is formally released as part of v1.2.2. The patch adds the corresponding body root verification in the proposal checks. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2026-28402 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low 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 7.1.