CVE-2026-4931 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Marginal	Marginal Smart Contract

No data.

No data.

References

Link	Providers
https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types
https://github.com/MarginalProtocol
https://marginal.gitbook.io/docs
https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db
https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/

History

Wed, 08 Apr 2026 20:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Marginal Marginal marginal Smart Contract
Vendors & Products		Marginal Marginal marginal Smart Contract

Wed, 08 Apr 2026 15:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-681
Metrics		cvssV3_1 `{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 07 Apr 2026 18:00:00 +0000

Type	Values Removed	Values Added
Description		Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
Title		CVE-2026-4931
References		https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types https://github.com/MarginalProtocol https://marginal.gitbook.io/docs https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/

MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-04-07T15:22:36.700Z

Updated: 2026-04-08T14:45:03.884Z

Reserved: 2026-03-26T19:31:49.120Z

Link: CVE-2026-4931

Vulnrichment

Updated: 2026-04-08T14:42:46.362Z

NVD

Status : Awaiting Analysis

Published: 2026-04-07T16:16:30.410

Modified: 2026-04-08T21:27:00.663

Link: CVE-2026-4931

Redhat

No data.

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