0.0
NA
CVE-2026-4931
CVE-2026-4931
Description

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

INFO

Published Date :

April 7, 2026, 4:16 p.m.

Last Modified :

April 7, 2026, 4:16 p.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2026-4931 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

Solution
Fix unsafe downcast in smart contract to prevent debt manipulation.
  • Implement safe casting for all numeric operations.
  • Validate debt values before settlement.
  • Review contract for similar type vulnerabilities.
References to Advisories, Solutions, and Tools
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-4931 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-4931 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-4931 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-4931 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Apr. 07, 2026

    Action Type Old Value New Value
    Added Description Smart contract Marginal v1 performs unsafe downcast, allowing attackers to settle a large debt position for a negligible asset cost.
    Added Reference https://cvefeed.io/cwe/detail/cwe-681-incorrect-conversion-between-numeric-types
    Added Reference https://github.com/MarginalProtocol
    Added Reference https://marginal.gitbook.io/docs
    Added Reference https://medium.com/@clarkcorrin/cve-2026-4931-how-spearbits-cantina-denied-a-critical-vulnerability-using-verifiably-false-0a27b92ac2db
    Added Reference https://scs.owasp.org/SCWE/SCSVS-CODE/SCWE-041/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.