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CVE-2026-25856

OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface

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

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.

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-94

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

2 techniques
Execution
Initial Access
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-job-configuration-interface
vulncheck.com

Timeline

Published
Jun 8, 2026
Last Updated
Jun 8, 2026

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