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CVE-2026-107806— Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite

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 Web 用户界面。在版本 2.3.8 到 2.5.0 之间，具有有效安全会话的已认证管理员可以向 端点提交由攻击者控制的便携式备份密钥材料及其匹配的清单文件。恢复流程会信任所提交的密钥，解密攻击者控制的內容，并替换掉正在运行的 配置文件，其中包括受保护的 Nginx 命令设置（如 ）。随后，触发对 端点的 POST 请求时，将在 Nginx UI 的运行时上下文中执行被恢复的命令，从而导致机密性、完整性和可用性受到影响。该问题已在版本 2.5.0 中修复。

CVSS 9.4 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
0xJacky nginx-ui >= 2.3.8, < 2.5.0 affected
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I. Basic Information for CVE-2026-107806

Vulnerability Information
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Vulnerability Title
Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite
Source: CVE Program / CVE List V5
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. From 2.3.8 until 2.5.0, an authenticated administrator with an active secure session can submit attacker-controlled portable backup key material and a matching manifest to POST /api/restore. The restore flow trusts the supplied key, decrypts attacker-controlled contents, and replaces the live app.ini, including protected nginx command settings such as TestConfigCmd. Triggering POST /api/nginx/test then executes the restored command in the Nginx UI runtime context, affecting confidentiality, integrity, and availability. This issue is fixed in version 2.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
0xJacky nginx-ui >= 2.3.8, < 2.5.0 -

II. Public POCs for CVE-2026-107806

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III. Intelligence Information for CVE-2026-107806

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Vendor Advisories for CVE-2026-107806 (1)

Vendor Pages for CVE-2026-107806 (1)

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

CVE-2026-107807 8.8 HIGH Nginx UI: Node Secret Credential Exposure via URL Query Parameter
CVE-2026-107809 8.8 HIGH Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs
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-94

V. Comments for CVE-2026-107806

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