What’s Vulnerable › Vulnerabilities
CVE-2026-33031: Nginx-UI: Disabled users retain full API access through previously issued bearer tokens
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-20 · updated 2026-10-26
- Weakness: CWE-284
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.
Affected products
- 0xJacky nginx-ui: before 2.3.4 — fixed in 2.3.4
How to fix
Upgrade to a fixed version: 0xJacky nginx-ui 2.3.4. Check the vendor advisory for mitigations.
References
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