Vulnerability · Published Jun 8, 2026 · Assigned by VulnCheck
CVE-2026-25856OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
High 8.8
In plain English
A high-severity code injection in openbullet2 from openbullet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| openbullet | openbullet2 | 0 – through 0.3.2 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2 technical-description, exploit
- https://www.vulncheck.com/advisories/openbullet2-authenticated-rce-via-job-configuration-interface third-party-advisory