{"id":"CVE-2026-34066","revision":"46b8df96491644ebbb7fd55eab39d419","records":[{"revision":"46b8df96491644ebbb7fd55eab39d419","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-34066","aliases":[],"title":"nimiq-blockchain: Peer-triggerable panic during history sync","description":"nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. Prior to version 1.3.0, `HistoryStore::put_historic_txns` uses an `assert!` to enforce invariants about `HistoricTransaction.block_number` (must be within the macro block being pushed and within the same epoch). During history sync, a peer can influence the `history: &[HistoricTransaction]` input passed into `Blockchain::push_history_sync`, and a malformed history list can violate these invariants and trigger a panic. `extend_history_sync` calls `this.history_store.add_to_history(..)` before comparing the computed history root against the macro block header (`block.history_root()`), so the panic can happen before later rejection checks run. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.","state":0,"publishedAt":"2026-04-22T19:47:49.249+00:00","modifiedAt":"2026-04-23T12:57:06.467+00:00","affected":[{"ecosystem":"Vendor product","name":"nimiq-blockchain","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"nimiq\",\n                    \"product\": \"nimiq-blockchain\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.3.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-j99g-7rqw-q9jg","https://github.com/nimiq/core-rs-albatross/pull/3656","https://github.com/nimiq/core-rs-albatross/commit/6f5511309c199d84b012fe6b9aba7e5582892c50","https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-34066","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-34066","identifiers":["CVE-2026-34066"]},"retained":false,"historicalAffected":[]}],"coverage":[]}