CVE-2026-25856

OpenBullet2 through version 0.3.2 contains an authenticated remote code execution vulnerability that allows authenticated users to execute arbitrary C# code on the server host by creating or modifying job configurations. Attackers can leverage the plain C# execution mode, which lacks reference filtering or API restrictions, to access the file system, spawn processes, and invoke arbitrary .NET APIs as the process user.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2
https://www.vulncheck.com/advisories/openbullet2-authenticated-rce-via-job-configuration-interface

Configurations

No configuration.

History

23 Jul 2026, 07:10

Type	Values Removed	Values Added
Summary		(es) OpenBullet2 hasta la versión 0.3.2 contiene una vulnerabilidad de ejecución remota de código autenticada que permite a usuarios autenticados ejecutar código C# arbitrario en el host del servidor al crear o modificar configuraciones de trabajos. Los atacantes pueden aprovechar el modo de ejecución de C# simple, que carece de filtrado de referencias o restricciones de API, para acceder al sistema de archivos, generar procesos e invocar API .NET arbitrarias como el usuario del proceso.

08 Jun 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-08 17:16

Updated : 2026-07-23 07:10

NVD link : CVE-2026-25856

Mitre link : CVE-2026-25856

CVE.ORG link : CVE-2026-25856

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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