# CVE-2026-102335: Nginx Proxy Manager authorization bypass in advanced config

Source: https://junglewise.ai/threats/cve-2026-102335-nginx-proxy-manager-through-2-16-0-fails-to-restrict-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-102335 · Severity: high · CVSS 7.1 · Published 2026-09-28

Nginx Proxy Manager is a Docker container that simplifies reverse proxy and SSL management. A flaw in versions through 2.16.0 allows users with basic "manage" permissions to modify advanced nginx configuration settings that should be restricted to administrators, enabling them to inject malicious directives. An attacker with limited privileges could serve arbitrary files, redirect traffic, or compromise the security of proxied hosts.

Technologies: [Nginx Proxy Manager](https://junglewise.ai/threats/technologies/proxy-manager). Vendors: [Nginx Proxy Manager](https://junglewise.ai/threats/vendors/nginx-proxy-manager).

## Quick answers

**Is CVE-2026-102335 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102335 being exploited in the wild.

**How severe is CVE-2026-102335?** High severity, with a CVSS score of 7.1, published 28 September 2026.

**Which products and versions are affected?** Nginx Proxy Manager through 2.16.0.

**Is there a fix for CVE-2026-102335?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102335 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-102335?** Check whether you run Nginx Proxy Manager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The advanced_config field lacks proper authorization checks, permitting non-admin users with manage permissions to inject arbitrary nginx configuration directives. Attackers can leverage this to craft alias directives or manipulate routing rules for their assigned proxy hosts. The vulnerability is a privilege escalation issue requiring existing manage-level access to the application.

## Affected products

- Nginx Proxy Manager Nginx Proxy Manager through 2.16.0

## Timeline

- 2026-09-28: disclosed

## References

- [https://github.com/NginxProxyManager/nginx-proxy-manager](https://github.com/NginxProxyManager/nginx-proxy-manager)
- [https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/README.md](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/README.md)

## Related threats

- [Nginx Proxy Manager missing rate-limiting on authentication](https://junglewise.ai/threats/cve-2026-102334-nginx-proxy-manager-through-2-16-0-lacks-rate-limiting-on)