CVE-2026-53520
Received Received - Intake
Authenticated Host Claim via NAT in Nezha Monitoring

Publication date: 2026-06-12

Last updated on: 2026-06-12

Assigner: GitHub, Inc.

Description
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0.
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Meta Information
Published
2026-06-12
Last Modified
2026-06-12
Generated
2026-06-13
AI Q&A
2026-06-13
EPSS Evaluated
N/A
NVD
CVE-2026-53520
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
nezha_monitoring nezha_monitoring From 2.0.14 (inc) to 2.1.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
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Executive Summary

The vulnerability exists in Nezha Monitoring versions from 2.0.14 up to but not including 2.1.0. Authenticated users can claim the dashboard Host through NAT (Network Address Translation) and preempt all dashboard routing. This means that an authenticated user can take control over the dashboard host routing, potentially disrupting normal dashboard operations.

Impact Analysis

This vulnerability can impact you by allowing an authenticated user to interfere with the dashboard routing of Nezha Monitoring. While it does not affect confidentiality or integrity, it can cause a denial of service or disruption of availability, as indicated by the CVSS score which rates the impact on availability as high.

Mitigation Strategies

To mitigate this vulnerability, upgrade Nezha Monitoring to version 2.1.0 or later, where the issue has been patched.

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