CVE-2026-25855

HIGH 8.8

OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-78
Vendor	openbullet
Product	openbullet2
Published	Jun 8, 2026
Last Updated	Jun 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

openbullet / openbullet2

0.2.5 ≤ 0.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackernoon.com: https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2 vulncheck.com: https://www.vulncheck.com/advisories/openbullet2-authenticated-rce-via-fileproxysource-script-upload

Credits

Maksim Rogov VulnCheck