Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-84313: 0.54% estimated exploitation activity in the next 30 days; percentile 45.63 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Endpoints that bind a TOTP secret (`POST /api/otp_enroll`) or register a WebAuthn passkey (`POST /api/finish_passkey_register`) for the *current* user require only a valid JWT. There is no current-password re-prompt and the routes are explicitly registered outside the `RequireSecureSession()` group. With only a stolen JWT, an attacker can attach their own second factor to the victim's account, surviving any subsequent password rotation and locking the legitimate user out.

Details `api/user/router.go:34-39` — note the routes registered *before* the secure-session group: ```go r.GET("/otp_secret", GenerateTOTP) r.POST("/otp_enroll", EnrollTOTP) // ← outside RequireSecureSession r.GET("/begin_passkey_register", BeginPasskeyRegistration) r.POST("/finish_passkey_register", FinishPasskeyRegistration) // ← outside RequireSecureSession o := r.Group("", middleware.RequireSecureSession()) { o.GET("/otp_reset", ResetOTP) // reset *is* protected — inconsistent ... } ```…

Published by the source

19 Oct 2026, 21:08 UTC

Last modified by the source

28 Oct 2026, 15:15 UTC

Source last checked

29 Oct 2026, 06:45 UTC

1. Revision 3 · amended · 29 Oct 2026

   Amended from osv record GHSA-gfrc-g87h-7h5w

2. Revision 2 · amended · 28 Oct 2026

   Amended from ghsa record GHSA-gfrc-g87h-7h5w

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GO-2026-6786

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# Patch Next advisory brief: CVE-2026-84313

Advisory: Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover
IDs: CVE-2026-84313, GHSA-gfrc-g87h-7h5w
Record: https://patchnext.com/advisories/cve-2026-84313 (revision 3, source checked 29 Oct 2026, 06:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/0xJacky/Nginx-UI 1.9.10-0.20260703131214-23d1934099b0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/0xJacky/Nginx-UI: affected < 1.9.10-0.20260703131214-23d1934099b0; fixed in 1.9.10-0.20260703131214-23d1934099b0

## Suggested inspection (read-only)
- Go github.com/0xJacky/Nginx-UI: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/0xJacky/Nginx-UI.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6786 (OSV record GO-2026-6786 lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0)
- Verified: https://github.com/advisories/GHSA-gfrc-g87h-7h5w (GitHub-reviewed advisory GHSA-gfrc-g87h-7h5w lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0 <1.9.10-0.20260703131214-23d1934099b0)
- Verified: https://osv.dev/vulnerability/GHSA-gfrc-g87h-7h5w (OSV record GHSA-gfrc-g87h-7h5w lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0 <1.9.10-0.20260703131214-23d1934099b0 (fixed))

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