CVE-2026-62283: Nezhahq Nezha

Critical severity, CVSS 9.9. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Nezhahq Nezha: from 1.14.13, up to and including 1.14.14; from 2.0.0, before 2.0.10 (fixed in 2.0.10)

Published 2026-08-21. Last modified 2026-09-09.