{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "core",
          "vendor": "UltraDAGcom",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "UltraDAG is a minimal DAG-BFT blockchain in Rust. In version 0.1, a non-council attacker can submit a signed SmartOp::Vote transaction that passes signature, nonce, and balance prechecks, but fails authorization only after state mutation has already occurred."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/U:Red",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-460",
              "description": "CWE-460: Improper Cleanup on Thrown Exception",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-696",
              "description": "CWE-696: Incorrect Behavior Order",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-21T16:57:42.100Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp"
        },
        {
          "name": "https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be"
        },
        {
          "name": "https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511"
        }
      ],
      "source": {
        "advisory": "GHSA-q8wx-2crx-c7pp",
        "discovery": "UNKNOWN"
      },
      "title": "UltraDAG: SmartOp Vote Path Triggers Fatal Supply Invariant Halt"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-40583",
    "datePublished": "2026-04-21T16:57:42.100Z",
    "dateReserved": "2026-04-14T13:24:29.475Z",
    "dateUpdated": "2026-04-21T16:57:42.100Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}