Vulnerability · Published Apr 3, 2026 · Assigned by GitHub_M
CVE-2026-35468nimiq/core-rs-albatross: Panic in history index request handlers when a full node runs without the history index
Medium 5.3
In plain English
A medium-severity security flaw in core-rs-albatross from nimiq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
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 1.3.0, 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nimiq | core-rs-albatross | < 1.3.0 |
Weakness: CWE-252 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-xr78-2jhh-9wf9 x_refsource_CONFIRM
- https://github.com/nimiq/core-rs-albatross/pull/3667 x_refsource_MISC
- https://github.com/nimiq/core-rs-albatross/commit/0e5c90a6c75b722f3d6091769776a4040e694dba x_refsource_MISC
- https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 x_refsource_MISC