Vulnerability in Nimiq Core-Rs-Albatross
CVE-2026-35468
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.005 · change: -0.001
Affected products
- Nimiq Core-Rs-Albatross — versions < 1.3.0
- Nimiq Proof-Of-Stake
Weakness classification (CWE)
References
- github.com/nimiq/core-rs-albatross/security/advisories/GHSA-xr78-2jhh-9wf9 (Vendor Advisory)
- github.com/nimiq/core-rs-albatross/pull/3667 (Patch)
- github.com/nimiq/core-rs-albatross/commit/0e5c90a6c75b722f3d6091769776a4040e694… (Patch)
- github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-35468?
- CVE-2026-35468 is a medium-severity vulnerability in Nimiq Core-Rs-Albatross, classified under CWE-252. CVSS score: 5.3/10. Published 2026-04-03.
- How severe is CVE-2026-35468?
- Medium severity. CVSS v3 base score is 5.3 out of 10.