CVE-2026-53520: CWE-284: Improper Access Control in nezhahq nezha
Nezha Monitoring versions from 2.0.14 up to but not including 2.1.0 contain an improper access control vulnerability. Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been fixed in version 2.1.0.
AI Analysis
Technical Summary
CVE-2026-53520 describes an improper access control vulnerability (CWE-284) in Nezha Monitoring, a self-hostable servers and websites monitoring tool. Specifically, in versions 2.0.14 through before 2.1.0, authenticated users can claim the dashboard Host via NAT, allowing them to preempt all dashboard routing. This behavior could disrupt availability of the dashboard. The vulnerability has been patched in version 2.1.0.
Potential Impact
The vulnerability allows authenticated users to interfere with dashboard routing by claiming the dashboard Host through NAT, resulting in denial of service or disruption of dashboard availability. There is no indication of confidentiality or integrity impact. The CVSS 3.1 score is 6.5 (medium severity) with no confidentiality or integrity impact but high impact on availability.
Mitigation Recommendations
Upgrade Nezha Monitoring to version 2.1.0 or later, where this vulnerability has been patched. No other mitigation or temporary fix is indicated.
CVE-2026-53520: CWE-284: Improper Access Control in nezhahq nezha
Description
Nezha Monitoring versions from 2.0.14 up to but not including 2.1.0 contain an improper access control vulnerability. Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been fixed in version 2.1.0.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-53520 describes an improper access control vulnerability (CWE-284) in Nezha Monitoring, a self-hostable servers and websites monitoring tool. Specifically, in versions 2.0.14 through before 2.1.0, authenticated users can claim the dashboard Host via NAT, allowing them to preempt all dashboard routing. This behavior could disrupt availability of the dashboard. The vulnerability has been patched in version 2.1.0.
Potential Impact
The vulnerability allows authenticated users to interfere with dashboard routing by claiming the dashboard Host through NAT, resulting in denial of service or disruption of dashboard availability. There is no indication of confidentiality or integrity impact. The CVSS 3.1 score is 6.5 (medium severity) with no confidentiality or integrity impact but high impact on availability.
Mitigation Recommendations
Upgrade Nezha Monitoring to version 2.1.0 or later, where this vulnerability has been patched. No other mitigation or temporary fix is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-09T17:30:33.456Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2c7c93e617e2d834c6c817
Added to database: 6/12/2026, 9:39:31 PM
Last enriched: 6/12/2026, 9:55:26 PM
Last updated: 6/13/2026, 12:02:26 AM
Views: 6
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