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CVE-2026-107809— Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs

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 服务器的一个基于 Web 的管理界面。在版本 2.0.0 至 2.5.0 中，前端将 JWT（JSON Web Token）存储在浏览器管理的 Cookie 中后，AuthRequired 会将该 Cookie 作为 API 凭据接受。由于管理端点普遍未要求 CSRF 令牌，也未执行 Origin 或 Referer 头部验证，远程攻击者可诱导已登录管理员的浏览器提交经过身份验证的跨站状态更改请求，例如 POST /api/configs。 该攻击利用前提是目标管理员账户未

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
0xJacky nginx-ui >= 2.0.0, < 2.5.0 affected
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I. Basic Information for CVE-2026-107809

Vulnerability Information
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Vulnerability Title
Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs
Source: CVE Program / CVE List V5
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, AuthRequired accepts a browser-managed token cookie as an API credential after the front end stores the JWT in that cookie. Because management endpoints do not universally require a CSRF token or perform Origin or Referer validation, a remote attacker can induce a logged-in administrator's browser to submit authenticated cross-site state-changing requests, including POST /api/configs. The attack requires an administrator account without OTP/Passkey or a target endpoint that does not require secure-session proof. The attacker cannot read the cross-origin response but can modify Nginx configuration, trigger reloads, or invoke other management operations reachable with the victim's session. This issue is fixed in version 2.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
0xJacky nginx-ui >= 2.0.0, < 2.5.0 -

II. Public POCs for CVE-2026-107809

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III. Intelligence Information for CVE-2026-107809

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Other References for CVE-2026-107809 (2)

Same Patch Batch · 0xJacky · 2026-10-09 · 10 CVEs total

CVE-2026-107806 9.4 CRITICAL Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite
CVE-2026-107807 8.8 HIGH Nginx UI: Node Secret Credential Exposure via URL Query Parameter
CVE-2026-107811 8.8 HIGH 0xJacky/nginx-ui /api/nodes Leaks Cluster Node Tokens and Allows Cross-Node Impersonation
CVE-2026-107813 8.8 HIGH Nginx UI: Incomplete fix of CVE-2026-84315 - the api/cluster router was not - wrapped in
CVE-2026-107808 8.1 HIGH Nginx UI: Authentication bypass: password login does not enforce a passkey-only second fac
CVE-2026-107810 8.1 HIGH Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path b
CVE-2026-107805 7.5 HIGH Nginx UI: Unauthenticated signed-request body staging can exhaust temporary storage
CVE-2026-107812 7.5 HIGH Nginx UI: Self-upgrade runs an unsigned binary verified only by a same-origin digest → RCE
CVE-2026-107804 5.3 MEDIUM Nginx UI: Bundled reverse proxy can bypass IP allowlists and enable shared login lockout

IV. Related Vulnerabilities

Same product: nginx-ui
Same vendor: 0xJacky
Same weakness: CWE-352

V. Comments for CVE-2026-107809

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