CVE-2026-62283Public exploitNetwork attack vector

Authenticated session hijack via unowned stream UUID

Published Aug 21, 2026 · Updated Aug 21, 2026

Authorization bypass in Nezha Monitoring 1.14.13 through 1.14.14 and 2.0.0 through 2.0.9 allows remote authenticated users to seize live streams. CreateStream records no creator identity, and the terminal and file WebSocket handlers accept any existing UUID without checking caller ownership. A RoleMember with a leaked live UUID can execute shell commands and read or write files on another user's target server.

CVSS severity9.9
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Nezha Monitoring 1.14.13 through 1.14.14 and 2.0.0 through 2.0.9 allows remote authenticated users to seize live streams. CreateStream records no creator identity, and the terminal and file WebSocket handlers accept any existing UUID without checking caller ownership. A RoleMember with a leaked live UUID can execute shell commands and read or write files on another user's target server.

The record

CVE
CVE-2026-62283
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
NezhaHQ
Product
Nezha Monitoring
Classifications
CWE-639, CWE-862, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.14.13, <= 1.14.14
  2. Affected versionversion=>= 2.0.0, < 2.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NezhaHQ · Nezha Monitoringversion=>= 1.14.13, <= 1.14.14; version=>= 2.0.0, < 2.0.10

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-862Missing Authorization
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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