CVE•Published 2026-10-09•Modified 2026-10-20•1 article on news•6 live references•NVD data

CVE-2026-107808Nginxui · Nginx_ui

Vulnerability data via NVD (ingested)

CVSS v3.1

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 66% of all CVEs

Weaknesses (CWE)

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

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.

Timeline

Published 2026-10-09

Modified 2026-10-20

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-107808

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Nginxui Nginx Ui"

All exposed Nginxui Nginx Ui instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Nginx Ui"

HTTP body or banner mentions "Nginx Ui" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-107808