CVE-2026-33031HIGH 8.1EPSS p19.0%
CVE-2026-33031CVE-2026-33031
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.
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| EPSS | 0.27% probability of exploitation · percentile 19.0% · 2026-06-18T12:00:27Z |
| Published | 2026-04-20 |
| Last modified | 2026-04-22 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Access Controlcwe-284 | 0% | live |
| Weakness | Incorrect Authorizationcwe-863 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.