Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nginxui | Nginx Ui | < 2.3.4 |
Related Weaknesses (CWE)
References
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-x234-x5vq-cc2vExploitVendor Advisory
FAQ
What is CVE-2026-33031?
CVE-2026-33031 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 pra...
How severe is CVE-2026-33031?
CVE-2026-33031 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33031?
Check the references section above for vendor advisories and patch information. Affected products include: Nginxui Nginx Ui.