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CVE-2026-62283— Nezha Monitoring: Cross-tenant terminal/file-manager session hijack via WebSocket stream UUID without ownership check

Quick assessment

Affected
nezhahq nezha
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

哪吒监控（Nezha Monitoring）是一款可自托管的轻量级服务器与网站监控及运维工具。在哪吒监控的 1.14.13 至 1.14.14 版本以及 2.0.0 至 2.0.9 版本中，服务模块 里由 创建的流标识符（stream identifiers）未与其创建用户进行绑定。同时， 和 这两个接口仅验证所传入的 UUID 是否存在，而未验证其所属用户身份。 因此，任何已认证为普通成员（RoleMember）的用户，若通过日志、浏览器历史记录、Referer 数据或遥测信息获取到活跃流的 UUID，便可附加到

CVSS 9.9 · Critical EPSS 0.37% · P30

Affected Version Matrix 2

VendorProduct Version RangeStatus
nezhahq nezha >= 1.14.13, <= 1.14.14 affected
>= 2.0.0, < 2.0.10 affected
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I. Basic Information for CVE-2026-62283

Vulnerability Information
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Vulnerability Title
Nezha Monitoring: Cross-tenant terminal/file-manager session hijack via WebSocket stream UUID without ownership check
Source: CVE Program / CVE List V5
Vulnerability Description
Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. Nezha versions 1.14.13 through 1.14.14 and 2.0.0 through 2.0.9 do not bind stream identifiers created by CreateStream in service/rpc/io_stream.go to their creating user, and `GET /ws/terminal/:id` and `GET /ws/file/:id` only check whether the supplied UUID exists. An authenticated RoleMember who obtains a live stream UUID from logs, browser history, referer data, or telemetry can attach to another user's terminal or file-manager session, read and write target-server files, and execute shell commands. This issue is fixed in version 2.0.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nezhahq nezha >= 1.14.13, <= 1.14.14 -

II. Public POCs for CVE-2026-62283

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6439 chars
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III. Intelligence Information for CVE-2026-62283

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Patches & Fixes for CVE-2026-62283 (1)

Vendor Advisories for CVE-2026-62283 (1)

Vendor Pages for CVE-2026-62283 (1)

IV. Related Vulnerabilities

Same product: nezha
Same vendor: nezhahq
Same weakness: CWE-639

V. Comments for CVE-2026-62283

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