# CVE-2026-102334 — NginxProxyManager nginx-proxy-manager

> As of 2026-09-29, CVE-2026-102334 is a HIGH-severity vulnerability in NginxProxyManager nginx-proxy-manager, CVSS v3.1 7.4, EPSS 0.4% (36.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-102334 as of 2026-09-29; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-29

## What is CVE-2026-102334?

Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.

The record classifies CVE-2026-102334 under weakness class [CWE-307](https://intel.threadlinqs.com/cwe/CWE-307). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 7 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.4 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **CVSS v4.0 base score:** 9.1 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.4% probability of exploitation in the next 30 days, higher than 36.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-28, last modified 2026-09-29

## Is CVE-2026-102334 being exploited?

It currently carries a trending score of 39 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **NginxProxyManager**: nginx-proxy-manager

## How to fix CVE-2026-102334

No vendor patch reference has been recorded for CVE-2026-102334 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-102334

No threat campaign in the Threadlinqs corpus currently references CVE-2026-102334, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-09-29. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908)

**Technical analysis**

- [github.com — technical description](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58)
- [github.com — technical description (token)](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182)
- [github.com — technical description (2fa)](https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-missing-brute-force-protection)

**Issue tracking and product pages**

- [github.com — product](https://github.com/NginxProxyManager/nginx-proxy-manager)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-102334
Full detection coverage and IOCs for threats exploiting CVE-2026-102334 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp