CVE-2026-107808

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

HIGH
8.1
CVSS Score
Published: October 9, 2026 at 03:11 PM UTC
Updated: October 20, 2026 at 03:24 PM UTC
2 products affected across 2 vendorsNginxuinginx UI

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMExploitVendor AdvisoryMitigation
Source: cverecord
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7p
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-287CWE-305CWE-308

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