CVE-2026-33031
8.1 · HIGHOverview
CVE-2026-33031 is a high-severity vulnerability affecting nginxui nginx_ui. It was published on April 20, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from nginxui. Update nginx_ui to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nginxui | nginx_ui | >= 0, < 2.3.4 | Affected |
Frequently Asked Questions
What is CVE-2026-33031?
CVE-2026-33031 is a high-severity vulnerability affecting nginxui nginx_ui. It was published on April 20, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-33031?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-33031?
Check the references section for vendor advisories and patches from nginxui. Update nginx_ui to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-33031?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-33031 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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