Intel

CVE-2026-107808

github.com/0xjacky/nginx-ui: Improper Authentication (CVE-2026-107808)

high

Description

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.

Source: cvelistv5OSV (Open Source Vulnerabilities)NVD (NIST)GitHub Security Advisories

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

gogithub.com/0xjacky/nginx-ui
1.9.10-0.20250517140552-daee3ac7ade1

Metrics

XIEM Effective CVSS
8.1
Source: cna-v3
KEV status
—
Show all metrics
Severity
high
Priority score
70.50
Exploit maturity
no public PoC known
CVSS v3
8.1
Published
2026-10-09 17:08 UTC
CWE
CWE-287, CWE-305, CWE-308

Weakness classes (CWE)

  • CWE-287Class

    Improper Authentication

    When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

    cwe.mitre.org →

  • CWE-305Base

    Authentication Bypass by Primary Weakness

    The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

    cwe.mitre.org →

  • CWE-308Base

    Use of Single-factor Authentication

    The product uses an authentication algorithm that uses a single factor (e.g., a password) in a security context that should require more than one factor.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-10-09 18:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • Reference: https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7p
    • SSVC: {"id":"CVE-2026-107808","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalI…
  2. New CVE Received2026-10-09 16:17 UTC· security-advisories@github.com
    • Description: 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.
    • CVSS V3.1: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    • CWE: CWE-287
    • CWE: CWE-305