CVE-2026-55254: Allocation of Resources Without Limits or Throttling

NCalc is a fast, lightweight expression evaluator for .NET. Prior to 6.1.1, the factorial operator implementation in src/NCalc.Core/Helpers/MathHelper.cs permits specially crafted expressions with extremely large factorial operands, causing excessive CPU consumption or a non-terminating loop due ...

NCalc: Denial of Service via Unbounded and Non-Terminating Factorial Evaluation

Impact A denial-of-service DoS vulnerability exists in the factorial operator implementation of NCalc. Specially crafted expressions containing extremely large factorial operands can trigger excessive CPU consumption or cause evaluation to enter a non-terminating loop due to integer overflow in t...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the factorial operator implementation. An attacker can cause excessive CPU consumption or application unresponsiveness by submitting specially crafted expressions with extremely...