CVE-2026-4931

{"id": "CVE-2026-4931", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.2}]}, "published": "2026-04-07T16:16:30.410", "references": [{"url": "https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types", "source": "cret@cert.org"}, {"url": "https://github.com/MarginalProtocol", "source": "cret@cert.org"}, {"url": "https://marginal.gitbook.io/docs", "source": "cret@cert.org"}, {"url": "https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db", "source": "cret@cert.org"}, {"url": "https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/", "source": "cret@cert.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-681"}]}], "descriptions": [{"lang": "en", "value": "Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost."}], "lastModified": "2026-04-08T21:27:00.663", "sourceIdentifier": "cret@cert.org"}