CVE-2026-102335 Nginx Proxy Manager through 2.16.0 Improper Authorization via advanced_config
Non-admin users can inject arbitrary Nginx directives via the advanced_config field, potentially reading arbitrary files or controlling routing.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102335?
CVE-2026-102335 is a high-severity missing authorization vulnerability in NginxProxyManager nginx-proxy-manager, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-102335?
How do I fix CVE-2026-102335?
No fix has been published for CVE-2026-102335 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-102335 being exploited?
There is no known exploitation of CVE-2026-102335 in the wild and no public exploit code.
Sources
Also known as GHSA-886j-w36h-wmx2.