# CVE-2026-33031

> Vulnerability · severity: **HIGH** (CVSS 8.1).

## Description

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, a user who was disabled by an administrator can use previously issued API tokens for up to the token lifetime. In practice, disabling a compromised account does not actually terminate that user’s access, so an attacker who already stole a JWT can continue reading and modifying protected resources after the account is marked disabled. Since tokens can be used to create new accounts, it is possible the disabled user to maintain the privilege. Version 2.3.4 patches the issue.

## Key facts

- **CVE ID:** CVE-2026-33031
- **Published:** 2026-04-20
- **CVSS severity:** HIGH
- **CVSS base score:** 8.1
- **CWE codes:** CWE-284, CWE-863

## Affected products

- `nginxui:nginx_ui`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33031

## Citation

> AI Analytics. CVE-2026-33031. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-33031. Derived from NIST NVD. Licensed CC0.

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