CVE-2026-84313 Nginx UI - Authentication Bypass

Nginx UI < 2.4.1 contains a broken authentication caused by missing password verification in POST /api/otp_enroll and /api/finish_passkey_register endpoints, letting attackers with stolen JWT bind attacker-controlled TOTP or passkey, exploit requires valid JWT token.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Upgrade to version 2.4.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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