Vulnerability · Published Apr 7, 2026 · Assigned by certcc
CVE-2026-4931CVE-2026-4931
Medium 6.8
In plain English
A medium-severity security flaw in Marginal Smart Contract from Marginal. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.3%top 81.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Marginal | Marginal Smart Contract | 1 |
Weakness: CWE-681 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
References
- https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types
- https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/
- https://marginal.gitbook.io/docs
- https://github.com/MarginalProtocol
- https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db