CVE-2026-34403
Nginx-UI: Cross-Site WebSocket Hijacking (CSWSH) via missing origin validation on all WebSocket endpoints in github.com/0xJacky/Nginx-UI
8.1
HIGH
CVSS 3.1
EPSS 0.18%
Description
Nginx-UI: Cross-Site WebSocket Hijacking (CSWSH) via missing origin validation on all WebSocket endpoints in github.com/0xJacky/Nginx-UI
How to fix CVE-2026-34403
To remediate CVE-2026-34403, upgrade the affected package to a fixed version below.
- Go/github.com/0xJacky/Nginx-UI—upgrade to 1.9.10-0.20260316053337-1a9cd29a3082 or later
- —upgrade to 1.9.10-0.20260316053337-1a9cd29a3082 or later
Is CVE-2026-34403 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.9.10-0.20260316053337-1a9cd29a3082
- from 0, < 1.9.10-0.20260316053337-1a9cd29a3082
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L |
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |