{"id":"CVE-2026-34069","revision":"d4c4df487512413db905b08f7fcfb62f","records":[{"revision":"d4c4df487512413db905b08f7fcfb62f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-34069","aliases":[],"title":"nimiq-consensus panics via RequestMacroChain micro-block locator","description":"nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the first locator hash on the victim’s main chain is a micro block hash (not a macro block hash) causes said panic. The RequestMacroChain::handle handler selects the locator based only on \"is on main chain\", then calls get_macro_blocks() and panics via .unwrap() when the selected hash is not a macro block (BlockchainError::BlockIsNotMacro). This issue has been fixed in version 1.3.0.","state":0,"publishedAt":"2026-04-13T23:55:52.994+00:00","modifiedAt":"2026-04-14T16:28:14.091+00:00","affected":[{"ecosystem":"Vendor product","name":"core-rs-albatross","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"nimiq\",\n                    \"product\": \"core-rs-albatross\",\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:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p","https://github.com/nimiq/core-rs-albatross/pull/3660","https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac","https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-34069","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-34069","identifiers":["CVE-2026-34069"]},"retained":false,"historicalAffected":[]}],"coverage":[]}