Answer in brief
CVE-2026-62283 records a Critical severity (CVSS 9.9) vulnerability in Nezha Monitoring: Cross-tenant terminal/file-manager session hijack via WebSocket stream UUID without ownership check. The current sources do not mark it as known exploited. The current feed maps nezhahq/nezha (generic), github.com/nezhahq/nezha (go), github.com/nezhahq/nezha (go), github.com/nezhahq/nezha (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps nezhahq/nezha (generic), github.com/nezhahq/nezha (go), github.com/nezhahq/nezha (go), github.com/nezhahq/nezha (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| nezhahq/nezhageneric | >= 1.14.13, <= 1.14.14 || >= 2.0.0, < 2.0.10 | Not reported |
| github.com/nezhahq/nezhago | >=1.14.13,<=1.14.14 | Not reported |
| github.com/nezhahq/nezhago | >=2.0.0,<=2.0.9 | 2.0.10 |
| github.com/nezhahq/nezhago | >=1.14.13 | Not reported |
| github.com/nezhahq/nezhago | >=2.0.0 <2.0.10 | 2.0.10 |
| github.com/nezhahq/nezhago | >=0 | Not reported |
Published upstream
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.