Description
Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field to administrators, allowing non-admin users with manage permissions to inject arbitrary nginx directives. Attackers can inject malicious nginx configuration such as alias directives to serve arbitrary files or control routing for their assigned hosts.
References7
- github.com/NginxProxyManager/nginx-proxy-manager
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/R…
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/b…
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/b…
- github.com/NginxProxyManager/nginx-proxy-manager/issues/5749
- github.com/NginxProxyManager/nginx-proxy-manager/pull/5908
- www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0…
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - CVSS 4.0
-
7.1
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 14 · as of 9 November 2026
- CWE
- CWE-863
Could this be exploited in your environment?
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