Is this vulnerability remotely exploitable?

Yes. If the affected endpoints are exposed over the internet, a remote attacker can exploit them without any authentication, as long as they can reach the OneUptime API.

What level of access does an attacker need to abuse this issue?

Only network access to the vulnerable endpoints is required. The attacker does not need a user account, API key, or session token to trigger notifications or phone number purchases.

What is the safest general fix pattern for this type of vulnerability?

Enforce mandatory authentication and authorization for all critical functions, especially those that send messages or create billable resources, by routing them through well-tested security middleware and applying least-privilege role checks.

Severity:

CRITICAL RISK

(9.1)

Missing Authentication for Notification and Phone Management (CWE-306) in OneUptime

CVE-2026-34758

Published:

Apr 2, 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:

Missing Authentication

CWE:

CWE-306

Impact:

Abuse of Notification Channels and Unauthorized Resource Consumption

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Abuse of Notification Channels and Unauthorized Resource Consumption

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Missing Authentication for Notification and Phone Management (CWE-306) in OneUptime

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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