CVE-2026-25855 OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload
Authenticated attackers can execute arbitrary commands on the host by uploading malicious script files via the proxy loading feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25855?
CVE-2026-25855 is a high-severity command injection vulnerability in openbullet2, published on 8 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources, causing the server to execute the scripts and return output as proxy lines, resulting in arbitrary command execution on the host as the process user.
Weakness: CWE-78
Which versions are affected by CVE-2026-25855?
How do I fix CVE-2026-25855?
No fix has been published for CVE-2026-25855 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-25855 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25855 exists.
Sources
Also known as GHSA-5jmp-7g8v-5p3h.