CVE-2026-27728 in oneuptime
Summary
by MITRE • 02/25/2026
OneUptime is a solution for monitoring and managing online services. Prior to version 10.0.7, an OS command injection vulnerability in `NetworkPathMonitor.performTraceroute()` allows any authenticated project user to execute arbitrary operating system commands on the Probe server by injecting shell metacharacters into a monitor's destination field. Version 10.0.7 fixes the vulnerability.
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Analysis
by VulDB Data Team • 03/03/2026
The vulnerability identified as CVE-2026-27728 affects OneUptime, a comprehensive monitoring and management solution for online services that enables organizations to track network performance and system health. This security flaw resides within the NetworkPathMonitor component, specifically in the performTraceroute() method which is responsible for executing network tracing operations. The issue represents a critical command injection vulnerability that fundamentally compromises the security posture of affected systems. The vulnerability exists in versions prior to 10.0.7, indicating that vendors and administrators must ensure proper patch management to maintain system integrity.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the destination field processing logic. When authenticated project users submit network monitoring requests through the traceroute functionality, the system fails to properly escape or filter shell metacharacters that may be present in the destination parameter. This allows malicious actors to inject operating system commands that get executed on the underlying Probe server with the privileges of the running service. The flaw directly maps to CWE-77 which defines improper neutralization of special elements used in OS commands, making it a classic command injection vulnerability. The vulnerability enables attackers to execute arbitrary code on the target system, potentially leading to complete system compromise.
From an operational perspective, this vulnerability creates significant risk for organizations utilizing OneUptime's monitoring services. Any authenticated user within a project scope can exploit this weakness to gain unauthorized access to the underlying infrastructure, potentially escalating privileges and executing malicious operations. The impact extends beyond simple command execution as attackers could leverage this vulnerability to establish persistent access, exfiltrate sensitive data, or disrupt network monitoring operations. The attack surface is particularly concerning because it requires only authentication to a project, making it accessible to users who may have limited access rights within the system. This vulnerability aligns with ATT&CK technique T1059.001 which covers command and scripting interpreter, specifically focusing on the execution of operating system commands through legitimate system interfaces.
The remediation strategy centers on upgrading to OneUptime version 10.0.7 or later, which implements proper input validation and sanitization mechanisms. Organizations should conduct immediate vulnerability assessments to identify systems running vulnerable versions and prioritize patch deployment. Additionally, network segmentation and access controls should be reviewed to limit the scope of potential exploitation. Security teams should monitor for suspicious command execution patterns and implement proper logging of network monitoring activities. The fix likely involves implementing proper input sanitization techniques such as parameterized queries, shell escaping, or using safe execution libraries that prevent command injection attacks. Organizations should also consider implementing network-based detection measures to identify potential exploitation attempts and maintain comprehensive audit trails of all monitoring operations performed within the system.