Vulnerability in github.com/0xJacky/Nginx-UI (CVE-2026-84360)
Summary
Vulnerability in github.com/0xJacky/Nginx-UI (CVE-2026-84360). Data can be tampered with by attackers. Exploitable via nginx_config_add. Mitigation: upgrade to 1.9.10-0.20260703131214-23d1934099b0 or later.
Original description
The description as published by the source.
Summary
An OTP-enabled authenticated user who cannot use the HTTP configuration mutation endpoints without a valid secure session can still mutate Nginx configuration through /mcp and /mcp_message using only ordinary authentication.
Details
The HTTP configuration mutation surface is explicitly grouped behind middleware.RequireSecureSession(). By contrast, the MCP endpoints are exposed with only middleware.AuthRequired(). The MCP server exposes configuration mutation tools including nginx_config_add and nginx_config_modify, so OTP-enabled users gain an alternate path around the intended step-up requirement.
Relevant code paths:
- api/config/router.go
- internal/middleware/secure_session.go
- mcp/router.go
- mcp/config/config_add.go
- mcp/config/config_modify.go
This is a security-control bypass rather than a missing feature. The product already established that OTP-enabled users should complete a secure session before high-impact configuration mutations are accepted on the HTTP path.
PoC
I verified this locally in an isolated environment with a temporary end-to-end harness that exercised the real /mcp and /mcp_message rou…
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-84360 has been found in github.com/0xJacky/Nginx-UI.
Attackers can target a specific entry point like nginx_config_add over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 8.1/10.
What to do: upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260703131214-23d1934099b0 or later.
If unsure, ask your IT team or search "github.com/0xJacky/Nginx-UI CVE-2026-84360" on the vendor's site.
CVE-2026-84360 (github.com/0xJacky/Nginx-UI) — CWE-288 / CVSS v3 8.1
Attack vector: remote (network-reachable) / no user interaction
Attack surface: nginx_config_add / nginx_config_modify / true
Patched: 1.9.10-0.20260703131214-23d1934099b0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-288) exists in github.com/0xJacky/Nginx-UI. Attackers reach the vulnerable code path via nginx_config_add.
Check the vendor advisory for the affected versions of github.com/0xJacky/Nginx-UI. Attack surface: nginx_config_add / nginx_config_modify / true.
Severity: High (CVSS 8.1/10). Data can be tampered with by attackers.
Update to 1.9.10-0.20260703131214-23d1934099b0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/0xJacky/Nginx-UI' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'github.com/0xJacky/Nginx-UI' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/0xJacky/Nginx-UIを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260703131214-23d1934099b0ステージング環境で 1.9.10-0.20260703131214-23d1934099b0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- web github.com
- web github.com
- web github.com
- web nvd.nist.gov
- web github.com