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CVE-2026-25855

OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload

Published: Jun 8, 2026Updated: Jun 8, 2026 Sources: CVE List NVD
NVD MITRE
8.8CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-78

Affected Products

openbullet2
openbullet

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

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

Timeline

Published
Jun 8, 2026
Last Updated
Jun 8, 2026

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