Is CVE-2026-33031 actively exploited?

No active exploitation of CVE-2026-33031 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33031 be exploited remotely?

Yes. CVE-2026-33031 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33031?

CVE-2026-33031 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-33031

HIGH

CVE-2026-33031

CWE-284Published: April 20, 2026· Updated: Apr 22, 2026

8.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33031 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.