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CVE-2026-33030— Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys

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Jacky个人开发者的一个 Nginx 的 WebUI。 Nginx UI 2.3.3及之前版本存在安全漏洞，该漏洞源于存在不安全的直接对象引用，允许任何经过身份验证的用户访问、修改和删除其他用户的资源。

CVSS 8.8 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-33030

Vulnerability Information
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Vulnerability Title
Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys
Source: CVE Program / CVE List V5
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. In versions 2.3.3 and prior, Nginx-UI contains an Insecure Direct Object Reference (IDOR) vulnerability that allows any authenticated user to access, modify, and delete resources belonging to other users. The application's base Model struct lacks a user_id field, and all resource endpoints perform queries by ID without verifying user ownership, enabling complete authorization bypass in multi-user environments. At time of publication, there are no publicly available patches.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Nginx UI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nginx UI是Jacky个人开发者的一个 Nginx 的 WebUI。 Nginx UI 2.3.3及之前版本存在安全漏洞，该漏洞源于存在不安全的直接对象引用，允许任何经过身份验证的用户访问、修改和删除其他用户的资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
0xJacky nginx-ui <= 2.3.3 -

II. Public POCs for CVE-2026-33030

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III. Intelligence Information for CVE-2026-33030

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Vendor Advisories for CVE-2026-33030 (1)

Same Patch Batch · 0xJacky · 2026-03-30 · 6 CVEs total

CVE-2026-33032 9.8 CRITICAL Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover
CVE-2026-33028 Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse
CVE-2026-33029 Nginx UI: DoS via Negative Integer Input in Logrotate Interval
CVE-2026-33026 nginx-ui Backup Restore Allows Tampering with Encrypted Backups
CVE-2026-33027 Nginx UI: Improper Path Validation Allows Recursive Deletion of the Nginx Configuration Di

IV. Related Vulnerabilities

Same product: nginx-ui
Same vendor: 0xJacky
Same weakness: CWE-78

V. Comments for CVE-2026-33030

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