CVE-2026-34067
Description
nimiq-transaction provides the transaction primitive to be used in Nimiq's Rust implementation. Prior to version 1.3.0, `HistoryTreeProof::verify` panics on a malformed proof where `history.len() != positions.len()` due to `assert_eq!(history.len(), positions.len())`. The proof object is derived from untrusted p2p responses (`ResponseTransactionsProof.proof`) and is therefore attacker-controlled at the network boundary until validated. A malicious peer could trigger a crash by returning a crafted inclusion proof with a length mismatch. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.
How to fix
- nimiq nimiq_proof-of-stake1.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nimiq nimiq_proof-of-stake | v < 1.3.0 | 1.3.0 |
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