Vulnerability-Lookup

GHSA-X4XQ-7W28-Q486

Vulnerability from github – Published: 2026-04-07 18:31 – Updated: 2026-04-08 15:31

Details

Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.

Severity ?

6.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-4931"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-681"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-07T16:16:30Z",
    "severity": "MODERATE"
  },
  "details": "Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.",
  "id": "GHSA-x4xq-7w28-q486",
  "modified": "2026-04-08T15:31:43Z",
  "published": "2026-04-07T18:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4931"
    },
    {
      "type": "WEB",
      "url": "https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MarginalProtocol"
    },
    {
      "type": "WEB",
      "url": "https://marginal.gitbook.io/docs"
    },
    {
      "type": "WEB",
      "url": "https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db"
    },
    {
      "type": "WEB",
      "url": "https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-4931 (GCVE-0-2026-4931)

Vulnerability from cvelistv5 – Published: 2026-04-07 15:22 – Updated: 2026-04-08 14:45

Title

CVE-2026-4931

Summary

Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

CWE

CWE-681 Incorrect Conversion between Numeric Types

Assigner

certcc

References

URL

Tags

	https://cvefeed.io/cwe/detail/cwe-681-incorrect-c…
	https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/
	https://marginal.gitbook.io/docs
	https://github.com/MarginalProtocol
	https://medium.com/@clarkcorrin/cve-2026-4931-how…

Impacted products

	Vendor	Product	Version
	Marginal	Marginal Smart Contract	Affected: 1

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.8,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-4931",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T14:44:25.365284Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-681",
                "description": "CWE-681 Incorrect Conversion between Numeric Types",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T14:45:03.884Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Marginal Smart Contract",
          "vendor": "Marginal",
          "versions": [
            {
              "status": "affected",
              "version": "1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-681 Incorrect Conversion between Numeric Types",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-07T15:22:36.700Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types"
        },
        {
          "url": "https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/"
        },
        {
          "url": "https://marginal.gitbook.io/docs"
        },
        {
          "url": "https://github.com/MarginalProtocol"
        },
        {
          "url": "https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-4931",
      "x_generator": {
        "engine": "VINCE 3.0.35",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-4931"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-4931",
    "datePublished": "2026-04-07T15:22:36.700Z",
    "dateReserved": "2026-03-26T19:31:49.120Z",
    "dateUpdated": "2026-04-08T14:45:03.884Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-X4XQ-7W28-Q486

CVE-2026-4931 (GCVE-0-2026-4931)

Tags

Sightings

Nomenclature