CVE-2026-4931

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

CVSS 3.1

8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-26)

CWE

CWE-681

Published

2026-04-07

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• marginal:v1-core

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/

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