CVE-2026-44015 Nginx UI: Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services
Authenticated attackers can exploit SSRF in Nginx UI to access internal services by manipulating cluster proxy settings, bypassing network segmentation.
- 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-2026-44015?
CVE-2026-44015 is a high-severity server-side request forgery vulnerability in 0xJacky nginx-ui, published on 12 May 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. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks.
Weakness: CWE-918
Which versions are affected by CVE-2026-44015?
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 | All versions | None |
github.com/0xJacky/Nginx-UI Go | All versions to 2.3.4 | None |
github.com/0xJacky/Nginx-UI Go | All versions to 2.3.4 | None |
Products include Nginxui Nginx Ui.
How do I fix CVE-2026-44015?
Upgrade to a fixed version.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-44015 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44015 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-wr32-99hh-6f35, GO-2026-5719.