CVE-2026-35468 nimiq/core-rs-albatross: Panic in history index request handlers when a full node runs without the history index
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-35468?
CVE-2026-35468 is a medium-severity vulnerability in nimiq core-rs-albatross, published on 3 Apr 2026.
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.
Weakness: CWE-252
Which versions are affected by CVE-2026-35468?
It affects 1 product.
Products include Nimiq Nimiq Proof-of-Stake.
How do I fix CVE-2026-35468?
No fix has been published for CVE-2026-35468 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-35468 being exploited?
There is no known exploitation of CVE-2026-35468 in the wild and no public exploit code.
Other vulnerabilities in nimiq core-rs-albatross
- CVE-2026-33471 nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation
- CVE-2026-40093 nimiq-blockchain is missing a wall-clock upper bound on block timestamps
- CVE-2026-34063 network-libp2p: Peer can crash the node by opening discovery protocol substream twice
- CVE-2026-34065 nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals
- CVE-2026-32605 Nimiq: Remote crash via off-by-one signer bounds check in proposal buffer
Sources
Also known as GHSA-xr78-2jhh-9wf9.