PT-2026-33844 · Nginx-Ui · Nginx-Ui

Published 2026-04-20 · Updated 2026-04-28 · CVE-2026-33031

Positive Technologies (AI Summary)

CVSS v4.0

8.6

High

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Nginx UI versions prior to 2.3.4

Description A user disabled by an administrator can continue using previously issued API tokens until the token lifetime expires. This occurs because token-based authentication fails to verify the user.Status variable, unlike the login process. Consequently, an attacker with a stolen JSON Web Token (JWT)—a compact, URL-safe means of representing claims to be transferred between two parties—can continue reading and modifying protected resources. Furthermore, because these tokens can be used to create new accounts, a disabled user may maintain their privileges indefinitely.

Recommendations Update to version 2.3.4.

Fix

Incorrect Authorization

Improper Access Control

Weakness Enumeration

CWE-863

CWE-284

Related Identifiers

CVE-2026-33031

GHSA-X234-X5VQ-CC2V

Affected Products

Nginx-Ui

References · 8

• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-x234-x5vq-cc2v · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33031 · Security Note
• https://osv.dev/vulnerability/GHSA-x234-x5vq-cc2v · Vendor Advisory
• https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4 · Note
• https://github.com/0xJacky/nginx-ui · Note
• https://github.com/0xJacky/nginx-ui/commit/7b66578adb47bbec839b621a4666495249379174 · Note
• https://twitter.com/_cvereports/status/2049063863425868208 · Twitter Post
• https://twitter.com/CVEnew/status/2046571901095735755 · Twitter Post