CVE-2026-33031: high-severity vulnerability in 0xJacky nginx-ui
Nginx-UI: Disabled users retain full API access through previously issued bearer tokens
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.3%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
0xJacky · nginx-uiRelated CVEs — 0xJacky nginx-ui
In the same product, most dangerous first.
CVE-2026-33032CRITICALNginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx TakeoverEPSS 35.3%CVE-2024-49368HIGHUnchecked logrotate settings lead to arbitrary command executionEPSS 27.7%CVE-2026-27944CRITICALNginx UI: Unauthenticated Backup Download with Encryption Key DisclosureEPSS 22.8%CVE-2024-22198HIGHAuthenticated (user role) arbitrary command execution by modifying `start_cmd` setting (GHSL-2023-268)EPSS 4.1%CVE-2024-22197HIGHAuthenticated (user role) remote command execution by modifying `nginx` settings (GHSL-2023-269)EPSS 1.5%CVE-2026-42221HIGHnginx-ui: Unauthenticated First-Run Installer Allows Remote Initial Admin ClaimEPSS 1.3%