Is this vulnerability remotely exploitable?

Yes, but only via authenticated access. An attacker who can log in as a project user and modify monitor destinations can trigger command execution on the Probe server remotely through the OneUptime interface or API.

Does an attacker need administrator privileges?

Not necessarily. Any project-level account with the ability to create or edit network path monitors is sufficient. Higher privileges may increase what else they can do, but the command execution itself does not inherently require admin-level roles.

What is the safest general fix pattern?

The most robust fix is to remove shell dependence entirely: call traceroute (or equivalent tools) via APIs that accept argument arrays, validate that the destination is a hostname or IP in a strict format, and reject any input containing shell metacharacters or whitespace beyond what is absolutely required.

Severity:

CRITICAL RISK

(9.9)

OS Command Injection (CWE-78) in OneUptime NetworkPathMonitor Traceroute

CVE-2026-27728

Published:

Feb 25, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution on Probe Server

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution on Probe Server

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

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OS Command Injection (CWE-78) in OneUptime NetworkPathMonitor Traceroute

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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