CVE-2026-33031

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.

Affected products

Nginx-Ui

Nginxui Nginx Ui

< 2.3.4

Fix

Available

CVSS 4.0

8.6 HIGH

CVSS 3.1

8.1 HIGH

EPSS

0.3% (20th percentile)

Weakness

CWE-863, CWE-284

NVD status

Analyzed

Published

2026-04-20

No exploit for CVE-2026-33031 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.