CVE-2026-4931
HIGHCVSS 8.6/10EPSS 0.26%
Last modified
CVE-2026-4931 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Marginal | V1-Core | <= 1.0.2 |
References
- https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2dbMitigation, Press/Media Coverage, Third Party Advisory
- https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/Not Applicable
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-4931?
Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
How severe is CVE-2026-4931?
CVE-2026-4931 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4931?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-4931?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST