What is CVE-2026-62283?

CVE-2026-62283 is a critical-severity vulnerability in Nezhahq Nezha, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.9/10. Published 2026-08-21.

How severe is CVE-2026-62283?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Nezhahq Nezha

CVE-2026-62283

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Nezhahq Nezha — versions >= 1.14.13, <= 1.14.14, >= 2.0.0, < 2.0.10

Weakness classification (CWE)

References

https://github.com/nezhahq/nezha/security/advisories/GHSA-q6xx-5vr8-p898 (x_refsource_CONFIRM)
https://github.com/nezhahq/nezha/commit/6661d6a7fc1c269f55c7f4e775082ad23fbe0f54 (x_refsource_MISC)
https://github.com/nezhahq/nezha/releases/tag/v2.0.10 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-62283?: CVE-2026-62283 is a critical-severity vulnerability in Nezhahq Nezha, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.9/10. Published 2026-08-21.
How severe is CVE-2026-62283?: Critical severity. CVSS v3 base score is 9.9 out of 10.