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CVE-2026-84314— Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint

Quick assessment

Affected
0xJacky nginx-ui
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nginx UI 是 Nginx Web 服务器的一个 Web 用户界面。在版本 2.4.1 之前， 用户管理接口允许经过身份验证的用户在未通过 验证的情况下，修改其他用户的密码。尽管自助密码修改路径要求执行步骤升级验证，但该接口却绕过了这一安全机制。拥有有效账户的攻击者可以利用此漏洞更改初始管理员的密码，使现有管理员令牌失效，并以管理员身份进行认证。该问题已在版本 2.4.1 中修复。

CVSS 8.7 · High
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I. Basic Information for CVE-2026-84314

Vulnerability Information
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Vulnerability Title
Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the POST /api/users/:id user-management endpoint permits an authenticated user to change another user's password without passing RequireSecureSession, even though the self-service password-change path requires that step-up. An attacker with an authenticated account can change the initial administrator's password, invalidate existing administrator tokens, and then authenticate as the administrator. This issue is fixed in version 2.4.1.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
0xJacky nginx-ui < 2.4.1 -

II. Public POCs for CVE-2026-84314

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III. Intelligence Information for CVE-2026-84314

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Vendor Advisories for CVE-2026-84314 (1)

Same Patch Batch · 0xJacky · 2026-10-12 · 11 CVEs total

CVE-2026-84318 8.8 HIGH Nginx UI: MCP `nginx_config_add` Bypasses Directive Validation — Authenticated RCE
CVE-2026-84313 8.8 HIGH Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent acco
CVE-2026-84316 8.8 HIGH Nginx UI: nginx config directive denylist (ValidateConfigFile) is bypassable via same-line
CVE-2026-84317 8.8 HIGH Nginx UI: MCP nginx_config_add skips config directive validation → authenticated nginx dir
CVE-2026-84315 8.3 HIGH Nginx UI OTP secure-session step-up is missing on sensitive mutation routes
CVE-2026-84319 8.3 HIGH Nginx UI: MCP configuration tools bypass restricted directive validation and allow seconda
CVE-2026-84360 8.1 HIGH Nginx UI: OTP secure-session step-up can be bypassed via MCP configuration tools
CVE-2026-84312 7.1 HIGH Nginx UI: Casdoor SSO callback uses a constant `state` parameter (login CSRF)
CVE-2026-84320 6.3 MEDIUM Nginx UI: Auto backup name allows path traversal outside validated storage path
CVE-2026-84321 5.4 MEDIUM Nginx UI: Standalone short tokens survive administrative revocation in cache and authentic

IV. Related Vulnerabilities

Same product: nginx-ui
Same vendor: 0xJacky
Same weakness: CWE-285

V. Comments for CVE-2026-84314

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