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CVE-2026-107810— Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied

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 2.0.0 至 2.5.0 之间， 模块会在应用 和 标志之前解包内部归档文件，并允许包含指向当前 Nginx 配置路径的符号链接。即使 和 标志均为 false，具有创建和恢复备份权限的认证用户仍可构造一个有效的备份，在临时目录（staging tree）中放置符号链接，并通过该链接写入常规文件。随后，当这些被篡改的文件被 Nginx 消费时，可能导致持久化的配置注入或服务拒绝（Denial of Service）。该问题已在版本 2.

CVSS 8.1 · 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-2026-107810

Vulnerability Information
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Vulnerability Title
Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied
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, internal/backup/restore.go extracts inner archives before applying the restore_nginx and restore_nginx_ui flags and permits symlinks targeting the live Nginx configuration path. An authenticated user who can create and restore backups can craft a valid backup that places a symlink in the staging tree and then writes a regular file through that link, even when both restore flags are false. This can persistently inject configuration or cause denial of service when the modified files are later consumed. 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:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
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-2026-107810

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III. Intelligence Information for CVE-2026-107810

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Vendor Advisories for CVE-2026-107810 (1)

Vendor Pages for CVE-2026-107810 (1)

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-2026-107809 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-2026-107805 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-59

V. Comments for CVE-2026-107810

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