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CVE-2026-46541 nimiq CVE debrief

A vulnerability in the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, the DhtResults accumulator is only initialized when the first DHT record passes verification. If the first record fails (from a malicious DHT node), DhtResults is never created, and all subsequent valid records are discarded with 'DHT inconsistent state' errors. This issue has been patched in version 1.4.0.

Vendor
nimiq
Product
core-rs-albatross
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-10
Advisory published
2026-06-10
Advisory updated
2026-06-10

Who should care

Users of Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm, specifically those using versions prior to 1.4.0.

Technical summary

The vulnerability exists in the handle_dht_get() function where the DhtResults accumulator is not initialized if the first DHT record fails verification. This causes all subsequent valid records to be discarded.

Defensive priority

HIGH

Recommended defensive actions

  • Update to version 1.4.0 or later to patch the vulnerability.
  • Review and verify the implementation of the handle_dht_get() function to ensure proper initialization of DhtResults accumulator.

Evidence notes

The vulnerability has been patched in version 1.4.0. References: [ref-5](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0), [ref-4](https://github.com/nimiq/core-rs-albatross/pull/3707), [ref-6](https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-ccqv-2c9q-mqw5).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46541 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46541

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46541 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46541

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.