CVE-2026-25856— OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1620 · Reflective Code LoadingAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| openbullet | openbullet2 | ≤ 0.3.2 | affected |
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I. Basic Information for CVE-2026-25856
Vulnerability Information
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Vulnerability Title
OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenBullet2 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenBullet2是openbullet个人开发者的一个跨平台自动化测试与数据抓取工具。 OpenBullet2 0.3.2及之前版本存在代码注入漏洞，该漏洞源于作业配置功能，可能导致经过身份验证的用户在服务器主机上执行任意C#代码，攻击者可利用纯C#执行模式访问文件系统、生成进程和调用.NET API。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| openbullet | openbullet2 | 0 ~ 0.3.2 | - |
II. Public POCs for CVE-2026-25856
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-25856 (1)
Security Blog Posts for CVE-2026-25856 (1)
- 🔗 One Empty Header to Admin: How an Auth Bypass Breaks OpenBullet2 | HackerNoontechnical-descriptionexploit
Same Patch Batch · openbullet · 2026-06-08 · 5 CVEs total
| CVE-2026-25555 | 9.8 CRITICAL | OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header |
| CVE-2026-25855 | 8.8 HIGH | OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload |
| CVE-2026-25559 | 8.8 HIGH | OpenBullet2 0.3.2 Path Traversal via Wordlist Endpoint |
| CVE-2026-39908 | 6.5 MEDIUM | OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source |
IV. Related Vulnerabilities
Same product: openbullet2
Same vendor: openbullet
Same weakness: CWE-94
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V. Comments for CVE-2026-25856
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