CVE-2026-44015CWE-918

Nginx UI: Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services

High · published May 12, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
31.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00385 · 31.4th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-05-12T20:49Z
EPSS history
Timeline
  • 12 MAY 20:49Z
    Nginx UI: Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services
    cvelistv5