{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, a denial-of-service vulnerability exists in the Ed25519 multisig delinearization code path. Ed25519PublicKey::delinearize() in keys/src/multisig/mod.rs called .unwrap() on curve point decompression, which panics when a public key is constructed from 32 bytes that do not represent a valid point on the Ed25519 curve. Ed25519PublicKey construction only validates byte length, not curve membership, so invalid keys can reach the delinearization path and crash the hosting process. This issue has been patched in version 1.4.0."
    }
  ],
  "id": "CVE-2026-46542",
  "lastModified": "2026-06-10T00:16:54.500",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-10T00:16:54.500",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nimiq/core-rs-albatross/pull/3713"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-h9cc-w26m-j342"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "nimiq-keys"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-46542"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-617"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-21T19:45:08Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nA denial-of-service vulnerability exists in the Ed25519 multisig delinearization code path. `Ed25519PublicKey::delinearize()` in `keys/src/multisig/mod.rs` called `.unwrap()` on curve point decompression, which panics when a public key is\nconstructed from 32 bytes that do not represent a valid point on the Ed25519 curve. `Ed25519PublicKey` construction only validates byte length, not curve membership, so invalid keys can reach the delinearization path and crash the\nhosting process.\n\nA secondary panic existed in `Commitment::From\u003c[u8; 32]\u003e`, which similarly called `.unwrap()` on a failing curve point decompression.\n\n**Who is affected:** Browser and desktop wallet users of the web-client WASM library and the `nimiq-wallet` crate, when initiating a multisig operation with an attacker-supplied public key. An attacker must convince the user to include\na crafted public key in a multisig setup \u2014 this is not a remotely triggerable node/validator crash.\n\n**Who is NOT affected:** Validator nodes, consensus, blockchain, mempool, and networking code. There is no on-chain multisig account type; multisig is a purely client-side construct, and no validator/consensus code calls the multisig  delinearization path.\n\n### Patches\n\nSee [PR](https://github.com/nimiq/core-rs-albatross/pull/3713).\n\n### Workarounds\n\nNo code-level workaround exists short of the patch. Users of wallet applications can mitigate exposure by only performing multisig operations with public keys received from trusted sources.\n\n### Resources\n- Affected code: `keys/src/multisig/mod.rs`, `keys/src/multisig/commitment.rs`",
  "id": "GHSA-h9cc-w26m-j342",
  "modified": "2026-05-21T19:45:08Z",
  "published": "2026-05-21T19:45:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-h9cc-w26m-j342"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nimiq/core-rs-albatross/pull/3713"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nimiq/core-rs-albatross/commit/3bc449a8138960c4de6bfd506bad1730c621d4de"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nimiq/core-rs-albatross"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nimiq-keys: Denial of service in Ed25519 multisig delinearization via invalid curve points"
}