---
id: "CVE-2026-107811"
kind: "vulnerability"
aliases: ["CVE-2026-107811", "GHSA-32gc-wf3m-78w9", "GO-2026-6702"]
title: "0xJacky/nginx-ui /api/nodes Leaks Cluster Node Tokens and Allows Cross-Node Impersonation as initUser in github.com/0xJacky/Nginx-UI"
severity: "high"
cvss: 8.8
epss: 0.00357
exploited: false
status: "open"
category: "package"
products: [{"name": "github.com/0xJacky/Nginx-UI", "fixed": ["1.9.10-0.20260728091109-0ecbd106c37b"], "affected": ">= 1.9.10-0.20250517140552-daee3ac7ade1, < 1.9.10-0.20260728091109-0ecbd106c37b", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["cluster-mode", "go", "nginx-ui", "package"]
not_affected_if: ["no-authenticated-users-beyond-admin", "single-node-deployment"]
published_at: "2026-10-09T16:17:25+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T19:51:28+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6702", "first_seen_at": "2026-10-23T19:13:08+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-107811", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107811", "first_seen_at": "2026-10-23T19:35:23+00:00"}]
---

# 0xJacky/nginx-ui /api/nodes Leaks Cluster Node Tokens and Allows Cross-Node Impersonation as initUser in github.com/0xJacky/Nginx-UI

Any logged-in user of Nginx UI can call /api/nodes and /api/nodes/:id, which return each cluster node's token. That token can be sent as X-Node-Secret to act as a trusted node, letting an attacker run cluster operations such as config sync and service restart on other members.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:github.com/0xJacky/Nginx-UI affected >= 1.9.10-0.20250517140552-daee3ac7ade1, < 1.9.10-0.20260728091109-0ecbd106c37b fixed 1.9.10-0.20260728091109-0ecbd106c37b

## How to check

Check the go.mod of projects that depend on github.com/0xJacky/Nginx-UI for a version in the affected range. unknown for a runtime check in the sources.

## Fix

Upgrade github.com/0xJacky/Nginx-UI to 2.5.0 or pseudo-version 1.9.10-0.20260728091109-0ecbd106c37b, then rotate node tokens.

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6702
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-107811
- 2026-10-23T19:35:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107811

## From the sources

Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, ordinary authenticated users can access /api/nodes and /api/nodes/:id, whose responses serialize the node token field. The same token is accepted as X-Node-Secret by AuthRequired and maps the request to initUser, allowing the user to impersonate a trusted node against a reachable cluster member. This cross-node authentication bypass can expose sensitive management operations, including configuration synchronization and service restart. This issue is fixed in version 2.5.0.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_