CVE-2026-34067 (GCVE-0-2026-34067)

Vulnerability from cvelistv5 – Published: 2026-04-22 19:52 – Updated: 2026-04-23 14:17
VLAI
Title
nimiq-transaction vulnerable to panic via `HistoryTreeProof` length mismatch
Summary
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.
Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 14:17 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
nimiq nimiq-transaction Affected: < 1.3.0
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