{"id":"CVE-2026-34067","aliases":["GHSA-264v-m8fm-76jm"],"url":"https://o3.security/vulnerability/CVE-2026-34067","summary":"nimiq-transaction vulnerable to panic via `HistoryTreeProof` length mismatch","details":"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.","published":"2026-04-22T19:52:43.916Z","modified":"2026-08-12T03:51:21.044821423Z","cvss":{"score":3.1,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L"},"epss":{"score":0.00318,"percentile":0.2447,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"nimiq-transaction","fixedVersion":null}],"fix":{"url":"https://github.com/nimiq/core-rs-albatross/commit/6ff0800e8e031363e787c827d8d033e5694e4e6a","label":"nimiq/core-rs-albatross@6ff0800"},"references":[{"type":"WEB","url":"https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34067.json"},{"type":"ADVISORY","url":"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-264v-m8fm-76jm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34067"},{"type":"FIX","url":"https://github.com/nimiq/core-rs-albatross/commit/6ff0800e8e031363e787c827d8d033e5694e4e6a"},{"type":"FIX","url":"https://github.com/nimiq/core-rs-albatross/pull/3659"},{"type":"PACKAGE","url":"https://github.com/nimiq/core-rs-albatross"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:21.044821423Z"}}