CVE-2026-107808 · GHSA-45gv-9wjv-xh7p

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

Risk score: 76/100
CVSS: 8.1 v3.1
Exploit chance (30 days): 0.4%
Published: 9 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: 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 Enabled2…
Affected: github.com/0xJacky/Nginx-UI (go) >= 1.9.10-0.20250517140552-daee3ac7ade1, < 1.9.10-0.20260728074558-95cd21b70814
Fix: Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260728074558-95cd21b70814 or later.
Exploitation: Public proof of concept

Why it is Amber

CVSS 8.1 high
Public exploit or proof of concept referenced
Remotely exploitable without logging in
On your watchlist: nginx, Go

Affected packages

Package	Ecosystem	Vulnerable	Fixed in
github.com/0xJacky/Nginx-UI	go	>= 1.9.10-0.20250517140552-daee3ac7ade1, < 1.9.10-0.20260728074558-95cd21b70814	1.9.10-0.20260728074558-95cd21b70814

References

Original 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.

Last activity 9 Oct 2026. Patch Forecast updates every hour.