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    CVE-2026-107808

    Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore issued a session after password verification, despite Enabled2FA reporting that the account has a second factor. An attacker who obtains the password can take over the account and reach administrative functionality without the registered passkey. This issue is fixed in version 2.5.0.

    Published:Oct 9, 2026
    Last Modified:Oct 20, 2026
    EPS:Oct 9, 2026
    EPSS Score:0.00409
    CVSS Score:8.1

    Affected Products

    Vendor
    0xjacky
    Product
    Nginx-ui
    Vendor
    Nginxui
    Product
    Nginx Ui

    Exploits

    https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7phttps://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7p

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-114 Authentication Abuse
    CAPEC-115 Authentication Bypass
    CAPEC-151 Identity Spoofing
    CAPEC-16 Dictionary-based Password Attack
    CAPEC-194 Fake the Source of Data
    CAPEC-22 Exploiting Trust in Client
    CAPEC-49 Password Brute Forcing
    CAPEC-509 Kerberoasting
    CAPEC-55 Rainbow Table Password Cracking
    CAPEC-555 Remote Services with Stolen Credentials
    CAPEC-560 Use of Known Domain Credentials
    CAPEC-561 Windows Admin Shares with Stolen Credentials
    CAPEC-565 Password Spraying
    CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
    CAPEC-593 Session Hijacking
    CAPEC-600 Credential Stuffing
    CAPEC-633 Token Impersonation
    CAPEC-644 Use of Captured Hashes (Pass The Hash)
    CAPEC-645 Use of Captured Tickets (Pass The Ticket)
    CAPEC-650 Upload a Web Shell to a Web Server
    CAPEC-652 Use of Known Kerberos Credentials
    CAPEC-653 Use of Known Operating System Credentials
    CAPEC-70 Try Common or Default Usernames and Passwords
    CAPEC-94 Adversary in the Middle (AiTM)

    Related CVEs

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    CVE-2026-84317 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, internal/config/validation.go (Vali…
    CVE-2026-84313 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otp_enroll and POST /api/…
    CVE-2026-84321 (CVSS 5.4) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalo…
    CVE-2026-84314 (CVSS 8.7) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the POST /api/users/:id user-manage…
    CVE-2026-84320 (CVSS 6.3) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.3, Nginx UI validates an automatic bac…
    CVE-2026-84318 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. From 2.0.0-rc.6 until 2.4.1, the MCP tool nginx_con…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High