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Response snapshot Nov 9, 2026, 02:36 UTC

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VulnerabilityCVE-2026-84314

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

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.

At a glance

Exploited
Not known
Severity
8.7 High (CVSS 4.0)
Chance of exploitation
0.4% in the next 30 days
Sources
1 source

What to do

GitHub lists first patched versions: github.com/0xJacky/Nginx-UI: 1.9.10-0.20260703131214-23d1934099b0. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-2gc7-j998-5xx6 (opens a new tab)

What happened

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).

Continue reading

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 JSON body updates the target user's password with only basic JWT authentication. No 2FA or secure session verification is performed, even if the target user has 2FA enabled.

The attack flow:

1. Attacker authenticates as any user (e.g., user ID 2). 2. Attacker sends POST /api/users/1 with {"password": "attacker-chosen"}. 3. Admin (user ID 1) password is changed. All existing admin tokens are invalidated (api/user/user.go:48-49). 4. Attacker logs in as admin with the new password. 5. Admin is locked out.

PoC

[poc.zip](https://github.com/user-attachments/files/26971275/poc.zip)

Please extract the uploaded compressed file before proceeding

1. docker compose up -d 2. python3 poc.py

Impact

- Any authenticated user can change any other user's password, including the initial admin (user ID 1). - Full account takeover of the admin account.

Affected package ranges reported by GitHub: github.com/0xJacky/Nginx-UI: < 1.9.10-0.20260703131214-23d1934099b0

Scores and how they were measured

CVSS base severity

8.7

Version 4.0As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

0.4%

Scored Percentile 36.5%

Model and measurement source (opens a new tab)

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-2gc7-j998-5xx6 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-2gc7-j998-5xx6, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  3. Primary source

    FIRST measured EPSS score (opens a new tab)

    Measured EPSS probability and percentile for CVE-2026-84314, scored 2026-11-08. This is a model estimate, not proof of exposure.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 9). Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint (CVE-2026-84314). https://kevwire.com/record/CVE-2026-84314

MLA

"Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint (CVE-2026-84314)." KEVWire, 9 Nov. 2026, kevwire.com/record/CVE-2026-84314.

Chicago

KEVWire. "Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint (CVE-2026-84314)." Last modified November 9, 2026. https://kevwire.com/record/CVE-2026-84314.

Evidence summary (plain text)

Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint (Oct 15, 2026).
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.
CVSS 8.7 (version 4.0; evidence as of Nov 9, 2026; https://github.com/advisories/GHSA-2gc7-j998-5xx6).
EPSS 0.4% for the following 30 days, scored Nov 8, 2026 (https://api.first.org/data/v1/epss?cve=CVE-2026-84314&date=2026-11-08).
Sources:
GitHub-reviewed advisory GHSA-2gc7-j998-5xx6: https://github.com/advisories/GHSA-2gc7-j998-5xx6
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
FIRST measured EPSS score: https://api.first.org/data/v1/epss?cve=CVE-2026-84314&date=2026-11-08
Record ID: CVE-2026-84314.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 9, 2026, 02:35 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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