{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.9.9"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d2597c579e22b122b03a6c24291ce85a14aa2460"
            }
          ],
          "repo": "https://github.com/signum-network/signum-node",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4vjp-2m22-r2q9"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48486.json"
  },
  "details": "Signum Node is a HDD-mined cryptocurrency using an energy efficient and fair Proof-of-Commitment (PoC+) consensus algorithm. Prior to version 3.9.9, an integer overflow in BlockServiceImpl.applyBlock() allowed a miner to receive an arbitrarily inflated block reward by crafting a block with a negative totalFeeCashBackNqt value. The vulnerability was introduced when the SMART_FEES hardfork (block ~1,029,000) enabled fee cash-back and burn accounting without overflow protection. This issue has been patched in version 3.9.9.",
  "id": "CVE-2026-48486",
  "modified": "2026-09-05T03:30:58.431207162Z",
  "published": "2026-09-03T15:22:35.486Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/signum-network/signum-node/releases/tag/v3.9.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48486.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/signum-network/signum-node/security/advisories/GHSA-4vjp-2m22-r2q9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48486"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Signum Node: Integer overflow in SMART_FEES fee distribution allows arbitrary miner reward inflation"
}