{"id":"GHSA-48m6-486p-9j8p","summary":"nimiq-consensus panics via RequestMacroChain micro-block locator","details":"### Impact\n An unauthenticated p2p peer can cause the `RequestMacroChain` message handler task to panic by sending a `RequestMacroChain` message where the first locator hash that is on the victim’s main chain is a micro block hash (not a macro block hash).\n\nIn `RequestMacroChain::handle`, the 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`).\n\n### Patches\nThe patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/pull/3660) is formally released as part of [v1.3.0](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0).\n\n### Workarounds\nNo known workarounds.","aliases":["CVE-2026-34069"],"modified":"2026-04-15T21:04:55.230558Z","published":"2026-04-13T16:36:00Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-04-13T16:36:00Z","nvd_published_at":"2026-04-14T00:16:07Z","cwe_ids":["CWE-617"]},"references":[{"type":"WEB","url":"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34069"},{"type":"WEB","url":"https://github.com/nimiq/core-rs-albatross/pull/3660"},{"type":"WEB","url":"https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac"},{"type":"PACKAGE","url":"https://github.com/nimiq/core-rs-albatross"},{"type":"WEB","url":"https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0"}],"affected":[{"package":{"name":"nimiq-consensus","ecosystem":"crates.io","purl":"pkg:cargo/nimiq-consensus"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.2.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-48m6-486p-9j8p/GHSA-48m6-486p-9j8p.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}