CVE-2026-107808

Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)

State: Published
Severity: 8.1 High
Published: Oct 9, 2026
Updated: Oct 9, 2026
Reserved: Oct 8, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-287 Improper Authentication
CWE-305 Authentication Bypass by Primary Weakness
CWE-308 Use of Single-factor Authentication

Affected Products

Product	Versions
nginx-ui0xJacky	>= 2.0.0, < 2.5.0Affected

References

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