🛡️ CVE-2026-35468 — nimiq-proof-of-stake

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-252 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2026-35468 is classified as CWE-252: Unchecked Return Value. A return value signalling failure is ignored, and execution continues as though the operation had succeeded.

Affected software

CVE-2026-35468 is recorded against 1 package.

  • nimiq-proof-of-stake (fixed in 1.2.2)

Timeline and source

Published on 3 April 2026 and last revised on 24 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
github.com
github.com

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-252
Public Exploit ✅ No
Source NVD
Published 2026-04-03
Updated 2026-08-11
Modified 2026-07-24

Affected Packages

Software From version Fixed in
nimiq-proof-of-stake — 1.2.2

Similar Threats

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