Vulnerability in Marginal Smart Contract
CVE-2026-4931
Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Marginal Smart Contract — versions 1
- Marginal V1-Core
Weakness classification (CWE)
References
- cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types (Not Applicable)
- scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/ (Not Applicable)
- marginal.gitbook.io/docs (Product)
- github.com/MarginalProtocol (Product)
- medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-v… (Third Party Advisory, Mitigation, Press/Media Coverage)
Frequently asked questions
- What is CVE-2026-4931?
- CVE-2026-4931 is a high-severity vulnerability in Marginal Smart Contract, classified under Incorrect Conversion between Numeric Types. CVSS score: 8.6/10. Published 2026-04-07.
- How severe is CVE-2026-4931?
- High severity. CVSS v3 base score is 8.6 out of 10.