CVE-2026-107811 0xJacky/nginx-ui /api/nodes Leaks Cluster Node Tokens and Allows Cross-Node Impersonation as initUser
Authenticated users can leak cluster node tokens via API, enabling impersonation of trusted nodes to access sensitive management operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107811?
CVE-2026-107811 is a high-severity vulnerability in 0xJacky nginx-ui, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-107811?
3 open source packages ship an affected version, including github.com/0xJacky/Nginx-UI. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/0xJacky/Nginx-UI Go | From 1.9.10-0.20250517140552-daee3ac7ade1 | 1.9.10-0.20260728091109-0ecbd106c37b |
github.com/0xJacky/Nginx-UI Go | From 1.9.10-0.20250517140552-daee3ac7ade1 | 1.9.10-0.20260728091109-0ecbd106c37b |
github.com/0xJacky/Nginx-UI Go | From 1.9.10-0.20250517140552-daee3ac7ade1 | 1.9.10-0.20260728091109-0ecbd106c37b |
Products include Nginxui Nginx Ui.
How do I fix CVE-2026-107811?
Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260728091109-0ecbd106c37b or later.
Is CVE-2026-107811 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107811 exists.
Other vulnerabilities in 0xJacky nginx-ui
- CVE-2026-33032 Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover
- CVE-2026-27944 Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
- CVE-2024-23827 Nginx-UI arbitrary file write through the Import Certificate feature
- CVE-2026-107806 Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite
- CVE-2026-33026 nginx-ui Backup Restore Allows Tampering with Encrypted Backups
Sources
Also known as GHSA-32gc-wf3m-78w9, GO-2026-6702.