{"id":"CVE-2026-46543","aliases":["EUVD-2026-35890","GHSA-vghx-352f-93jm"],"status":"published","title":"nimiq-blockchain: Genesis batch set request","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00291,"percentile":0.21977,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2026-05-21T19:46:15Z","modified":"2026-10-28T02:30:21Z","fixes":[{"ecosystem":"crates.io","package":"nimiq-blockchain","fixed_in":["1.5.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"nimiq-blockchain","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"nimiq-blockchain","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.5.0"}]}]}],"products":[{"vendor":"nimiq","product":"core-rs-albatross"}],"references":[{"url":"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-vghx-352f-93jm","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/nimiq/core-rs-albatross/pull/3745","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/nimiq/core-rs-albatross/releases/tag/v1.5.0","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/nimiq/core-rs-albatross/commit/8e8b0abdb1b66f5e9b25b3833879f05c173a5596","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46543","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vghx-352f-93jm"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46543.json","tags":["advisory"]},{"url":"https://github.com/nimiq/core-rs-albatross","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-46543","title":"nimiq-blockchain: Genesis batch set request","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:32.019Z","modified":"2026-06-10T16:32:15.916Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T13:46:55.086623Z"}],"euvd":[{"id":"EUVD-2026-35890","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:32Z","modified":"2026-06-10T16:32:15Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T18:20:44.937217Z"}],"ghsa":[{"id":"GHSA-vghx-352f-93jm","title":"nimiq-blockchain: Genesis batch set request","description":"### Impact\nA remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls `get_epoch_chunks` which iterates backwards through macro blocks using `Policy::macro_block_before`. When it reaches the genesis block number, `macro_block_before` panics with \"No macro blocks before genesis block\".\n\n### Patches\n[The patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/pull/3745) is formally released as part of [v1.5.0](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.5.0).\n\n### Workarounds\nNo Workaround, although requesting the genesis batch set is not used during normal operation.\n\n### Resources\nSee [PR](https://github.com/nimiq/core-rs-albatross/pull/3745).","status":"published","published":"2026-05-21T19:46:15Z","modified":"2026-06-10T13:41:39Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:40:24.856614Z"}],"nvd":[{"id":"CVE-2026-46543","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-10T00:16:54.63Z","modified":"2026-07-23T09:10:00.113Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:12:23.485267Z"}],"osv":[{"id":"CVE-2026-46543","title":"nimiq-blockchain: Genesis batch set request","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with \"No macro blocks before genesis block\". This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:32.019Z","modified":"2026-10-28T02:30:21.062618582Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:45:05.870292Z"},{"id":"GHSA-vghx-352f-93jm","title":"nimiq-blockchain: Genesis batch set request","description":"### Impact\nA remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls `get_epoch_chunks` which iterates backwards through macro blocks using `Policy::macro_block_before`. When it reaches the genesis block number, `macro_block_before` panics with \"No macro blocks before genesis block\".\n\n### Patches\n[The patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/pull/3745) is formally released as part of [v1.5.0](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.5.0).\n\n### Workarounds\nNo Workaround, although requesting the genesis batch set is not used during normal operation.\n\n### Resources\nSee [PR](https://github.com/nimiq/core-rs-albatross/pull/3745).","status":"published","published":"2026-05-21T19:46:15Z","modified":"2026-06-10T13:45:16.343930493Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:46:57.348035Z"}]}}