What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-08 · updated 2026-07-23
• Weakness: CWE-94

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

• openbullet2: through 0.3.2

References

• 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

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