CVE-2026-55254

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 ...

CVE-2026-55254 NCalc: Denial of Service via Unbounded and Non-Terminating Factorial Evaluation

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 ...

CVE-2026-55254

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 ...

CVE-2026-55254

NCalc (.NET) contains a DoS via the factorial operator in the NCalc.Core/Helpers/MathHelper.cs path. Prior to v6.1.1, evaluating expressions with extremely large factorial operands can cause excessive CPU usage or a non-terminating loop due to integer overflow. A fix was implemented in v6.1.1 tha...

CVE-2026-55254 NCalc: Denial of Service via Unbounded and Non-Terminating Factorial Evaluation

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 ...

GHSA-3W5P-95MH-GQ75 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...

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...

PT-2026-50732

Name of the Vulnerable Software and Affected Versions NCalc versions prior to 6.1.1 Description The factorial operator implementation in src/NCalc.Core/Helpers/MathHelper.cs allows specially crafted expressions with extremely large factorial operands to cause excessive CPU consumption or a...