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Vulnerability record · CVE-2026-35468 · published 3 April 2026

CVE-2026-35468: Nimiq proof-of-stake unchecked return value vulnerability

Nimiq · Nimiq Proof Of Stake

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, two peer-facing consensus request handlers assume that the history index is always available and call blockchain.history_store.history_index().unwrap() directly. That assumption is false by construction. HistoryStoreProxy::history_index() explicitly returns None for the valid HistoryStoreProxy::WithoutIndex state. when a full node is syncing or otherwise running without the history index, a remote peer can send RequestTransactionsProof or RequestTransactionReceiptsByAddress and trigger an Option::unwrap() panic on the request path. This issue has been patched in version 1.3.0.

7.5 CVSS 3.1 High EPSS 0.63% · top 51.9% CWE-252 · Unchecked return value
7.5CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
24 Jul 2026Last modified by NVD

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, two peer-facing consensus request handlers assume that the history index is always available and call blockchain.history_store.history_index().unwrap() directly. That assumption is false by construction. HistoryStoreProxy::history_index() explicitly returns None for the valid HistoryStoreProxy::WithoutIndex state. when a full node is syncing or otherwise running without the history index, a remote peer can send RequestTransactionsProof or RequestTransactionReceiptsByAddress and trigger an Option::unwrap() panic on the request path. This issue has been patched in version 1.3.0.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/nimiq/core-rs-albatross/commit/0e5c90a6c75b722f3d6091769776a4040e694dba Patch
https://github.com/nimiq/core-rs-albatross/pull/3667 Patch
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 Release Notes
https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-xr78-2jhh-9wf9 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-35468), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.