---
title: "CVE-2026-102335: Nginx Proxy Manager - Broken Access Control"
description: "Nginx Proxy Manager <= 2.16.0 contains a broken access control caused by insufficient restriction on the advanced_config field, letting non-admin users with manage permissions inject arbitrary nginx directives."
url: https://panop.io/threat-heartbeat/CVE-2026-102335/
---

# CVE-2026-102335 Nginx Proxy Manager - Broken Access Control

Nginx Proxy Manager <= 2.16.0 contains a broken access control caused by insufficient restriction on the advanced\_config field, letting non-admin users with manage permissions inject arbitrary nginx directives.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.23% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102335)

## Details

Type

Broken Access Control

Impact

Broken Access Control, File System Read, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Published

28 September 2026

Updated

15 October 2026

Weakness

[CWE-863](https://cwe.mitre.org/data/definitions/863.html)

## Vendor fix

Update to a version later than 2.16.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-102335](https://nvd.nist.gov/vuln/detail/CVE-2026-102335)
- [https://github.com/NginxProxyManager/nginx-proxy-manager/issues/5749](https://github.com/NginxProxyManager/nginx-proxy-manager/issues/5749)
- [https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908](https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908)
- [https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-improper-authorization-via-advanced-config](https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-improper-authorization-via-advanced-config)
- [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#L36](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/README.md#L36)
- [https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/user.js#L52-L62](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/user.js#L52-L62)
- [https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/templates/proxy\_host.conf#L28](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/templates/proxy_host.conf#L28)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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