Vulnerability record · CVE-2026-4931 · published 7 April 2026

CVE-2026-4931: Marginal v1-core vulnerability

Marginal · V1 Core

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

8.6 CVSS 3.1 High EPSS 0.46% · top 62.7% CWE-681 · CWE-681

8.6CVSS 3.1 base score

0.46%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References

17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

V1 Core Marginal

References

Link	Tags
https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types	Not Applicable
https://github.com/MarginalProtocol	Product
https://marginal.gitbook.io/docs	Product
https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-fal	MitigationPress/Media CoverageThird Party Advisory
https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/	Not Applicable

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Source: NIST National Vulnerability Database (record CVE-2026-4931), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.