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Back to active CVEs
High · CVSS 8.1CVE-2026-107808

Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)CVE-2026-107808

Answer in brief

CVE-2026-107808 records a High severity (CVSS 8.1) vulnerability in Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass). The current sources do not mark it as known exploited. The current feed maps 0xJacky/nginx-ui (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 9, 2026Updated Oct 9, 2026Source checked Oct 9, 2026First seen by HOL Oct 9, 2026Material review Oct 9, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps 0xJacky/nginx-ui (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
0xJacky/nginx-uigeneric>=2.0.0 <2.5.02.5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for 0xJacky/nginx-ui.
  2. 2Review the reported fix. Update 0xJacky/nginx-ui to 2.5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 9, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Nginx UI: Bundled reverse proxy can bypass IP allowlists and enable shared login lockoutSame 0xjacky/nginx-ui package
  • Nginx UI: Unauthenticated signed-request body staging can exhaust temporary storageSame 0xjacky/nginx-ui package
  • Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config OverwriteSame 0xjacky/nginx-ui package
  • Nginx UI: Node Secret Credential Exposure via URL Query ParameterSame 0xjacky/nginx-ui package
  • Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIsSame 0xjacky/nginx-ui package
  • Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are appliedSame 0xjacky/nginx-ui package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-287, CWE-305, CWE-308
Source
CVE List V5
Source checked
Oct 9, 2026
References
3 linked sources
Open source record