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CVE-2026-25856— OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface

Quick assessment

Affected
openbullet openbullet2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 8.8 · High EPSS 0.85% · P57

Affected Version Matrix 1

VendorProduct Version RangeStatus
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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-25856

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Vendor Advisories for CVE-2026-25856 (1)

Security Blog Posts for CVE-2026-25856 (1)

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

V. Comments for CVE-2026-25856

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