VULNERABILITY INTELLIGENCE

CVE-2026-33031

CVSS score8.1 HIGH
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-04-20
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-284

Primary references