PT-2026-33844 · 0Xjacky · Nginx-Ui

Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-33031

Mitre

CVSS v4.0

8.6

High

AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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.

Fix

Improper Access Control

Incorrect Authorization

Weakness Enumeration

CWE-284

CWE-863

Related Identifiers

CVE-2026-33031

Affected Products

Nginx-Ui

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-33031 · Security Note
• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-x234-x5vq-cc2v · Note