CVE-2026-4931

medium

Description

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

References

https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/

https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db

https://marginal.gitbook.io/docs

https://github.com/MarginalProtocol

https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types

Details

Source: Mitre, NVD

Published: 2026-04-07

Updated: 2026-04-08

Risk Information

CVSS v2

Base Score: 5.4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 6.8

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

Severity: Medium

EPSS

EPSS: 0.00018