{"id":"CVE-2026-46545","aliases":["EUVD-2026-35894","GHSA-mw3q-r9wh-h2ff"],"status":"published","title":"nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item","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, unauthenticated denial-of-service vulnerability in MerkleRadixTrie::put_chunk allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes). This issue has been patched in version 1.5.0.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00339,"percentile":0.27565,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-248"],"published":"2026-05-21T19:50:31Z","modified":"2026-10-28T02:30:35Z","fixes":[{"ecosystem":"crates.io","package":"nimiq-primitives","fixed_in":["1.5.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"nimiq-primitives","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"nimiq-primitives","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-mw3q-r9wh-h2ff","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/nimiq/core-rs-albatross/pull/3762","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/0fb8766adea91e038af00e635a6eb92756e50172","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46545","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mw3q-r9wh-h2ff"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46545.json","tags":["advisory"]},{"url":"https://github.com/nimiq/core-rs-albatross","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-46545","title":"nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item","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, unauthenticated denial-of-service vulnerability in MerkleRadixTrie::put_chunk allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes). This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:51.072Z","modified":"2026-06-10T14:38:24.123Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T13:46:55.086623Z"}],"euvd":[{"id":"EUVD-2026-35894","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, unauthenticated denial-of-service vulnerability in MerkleRadixTrie::put_chunk allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes). This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:51Z","modified":"2026-06-10T14:38:24Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:45.405546Z"}],"ghsa":[{"id":"GHSA-mw3q-r9wh-h2ff","title":"nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item","description":"### Impact\n\nA remote, unauthenticated denial-of-service vulnerability in `MerkleRadixTrie::put_chunk` allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes).\n\nA malicious peer can respond to a `RequestChunk` with a `ResponseChunk::Chunk` whose first `TrieItem.key` is the empty (ROOT) key. The chunk passes sorting, range, and Merkle-proof validation, but when `put_raw` tries to store a value at the root node, it calls `TrieNode::put_value(...).unwrap()`, which returns `Err(RootCantHaveValue)` and panics, aborting the node process. The panic fires on the first malicious chunk the victim commits; no rate limit or authentication gate caps the attack.\n\nImpacted: any node running state sync against untrusted peers — this includes fresh nodes performing initial download and existing nodes recovering from data loss. Honest nodes never construct ROOT-keyed items, so non-syncing operation is unaffected.\n\n### Patches\n\nSee [PR](https://github.com/nimiq/core-rs-albatross/pull/3762).\n\n### Workarounds\n\nThere is no safe in-process workaround: any peer serving state-sync data can trigger the crash and the code path is not guarded by a feature flag.\n\n### Resources\n\n- Fix commit: (link to the merged PR commit, once merged)\n- Affected code: [`primitives/trie/src/trie.rs`](https://github.com/nimiq/core-rs-albatross/blob/albatross/primitives/trie/src/trie.rs) — `put_chunk` (around line 819) and `put_raw` (around line 351)","status":"published","published":"2026-05-21T19:50:31Z","modified":"2026-06-10T13:41:42Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:40:24.856614Z"}],"nvd":[{"id":"CVE-2026-46545","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, unauthenticated denial-of-service vulnerability in MerkleRadixTrie::put_chunk allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes). This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-10T00:16:54.77Z","modified":"2026-07-23T09:10:00.113Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:12:23.485267Z"}],"osv":[{"id":"CVE-2026-46545","title":"nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item","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, unauthenticated denial-of-service vulnerability in MerkleRadixTrie::put_chunk allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes). This issue has been patched in version 1.5.0.","status":"published","published":"2026-06-09T23:47:51.072Z","modified":"2026-10-28T02:30:35.207476479Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T15:45:05.870292Z"},{"id":"GHSA-mw3q-r9wh-h2ff","title":"nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item","description":"### Impact\n\nA remote, unauthenticated denial-of-service vulnerability in `MerkleRadixTrie::put_chunk` allows any state-sync peer to crash any node performing state synchronization (freshly joining nodes and recovering nodes).\n\nA malicious peer can respond to a `RequestChunk` with a `ResponseChunk::Chunk` whose first `TrieItem.key` is the empty (ROOT) key. The chunk passes sorting, range, and Merkle-proof validation, but when `put_raw` tries to store a value at the root node, it calls `TrieNode::put_value(...).unwrap()`, which returns `Err(RootCantHaveValue)` and panics, aborting the node process. The panic fires on the first malicious chunk the victim commits; no rate limit or authentication gate caps the attack.\n\nImpacted: any node running state sync against untrusted peers — this includes fresh nodes performing initial download and existing nodes recovering from data loss. Honest nodes never construct ROOT-keyed items, so non-syncing operation is unaffected.\n\n### Patches\n\nSee [PR](https://github.com/nimiq/core-rs-albatross/pull/3762).\n\n### Workarounds\n\nThere is no safe in-process workaround: any peer serving state-sync data can trigger the crash and the code path is not guarded by a feature flag.\n\n### Resources\n\n- Fix commit: (link to the merged PR commit, once merged)\n- Affected code: [`primitives/trie/src/trie.rs`](https://github.com/nimiq/core-rs-albatross/blob/albatross/primitives/trie/src/trie.rs) — `put_chunk` (around line 819) and `put_raw` (around line 351)","status":"published","published":"2026-05-21T19:50:31Z","modified":"2026-06-10T13:45:16.346499475Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T15:46:52.170928Z"}]}}