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High, CVSS 8.7amended

Nginx UI: Account Takeover via Missing RequireSecureSession on User Management Endpoint

CVE-2026-84314GHSA-2gc7-j998-5xx6

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (github.com/0xJacky/Nginx-UI 1.9.10-0.20260703131214-23d1934099b0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · score source
EPSS
  • CVE-2026-84314: 0.42% estimated exploitation activity in the next 30 days; percentile 36.28 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary POST /api/users/:id allows any authenticated user to change any other user's password without RequireSecureSession (2FA verification). In contrast, the self password change endpoint POST /api/user/password correctly requires RequireSecureSession. This inconsistency enables any authenticated user to take over the initial admin account (user ID 1) by simply changing its password. Details nginx-ui enforces RequireSecureSession middleware on sensitive operations such as self password change (api/user/router.go:55), self profile update (api/user/router.go:54), settings modification (api/settings/router.go:12), and config file deletion/rename (api/config/router.go:16-21). However, the user management endpoint registered in InitManageUserRouter (api/user/user.go:31-68) is mounted on the g router group (router/routers.go:92) which only applies middleware.AuthRequired() and middleware.Proxy() — no RequireSecureSession(). As a result, POST /api/users/:id with a password field in the…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 4 · amended ·

    Amended from ghsa record GHSA-2gc7-j998-5xx6

  2. Revision 3 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 2 · amended ·

    Amended from osv record GO-2026-6771

  4. Revision 1 · created ·

    Published from osv record GHSA-2gc7-j998-5xx6

Agent brief

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# Patch Next advisory brief: CVE-2026-84314

Advisory: Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint
IDs: CVE-2026-84314, GHSA-2gc7-j998-5xx6
Record: https://patchnext.com/advisories/cve-2026-84314 (revision 4, source checked 26 Oct 2026, 15:32 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
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/GHSA-2gc7-j998-5xx6 (OSV record GHSA-2gc7-j998-5xx6 lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0 <1.9.10-0.20260703131214-23d1934099b0 (fixed))
- Verified: https://osv.dev/vulnerability/GO-2026-6771 (OSV record GO-2026-6771 lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0 <1.9.10-0.20260703131214-23d1934099b0 (fixed))
- Verified: https://github.com/advisories/GHSA-2gc7-j998-5xx6 (GitHub-reviewed advisory GHSA-2gc7-j998-5xx6 lists affected ranges: Go github.com/0xJacky/Nginx-UI >=0 <1.9.10-0.20260703131214-23d1934099b0)

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