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CVE-2026-33026— nginx-ui Backup Restore Allows Tampering with Encrypted Backups

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 2.3.4之前版本存在安全漏洞，该漏洞源于备份恢复机制允许攻击者篡改加密备份存档并在恢复过程中注入恶意配置。

AI Predicted 7.5 Difficulty: Easy EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1195.002 · Compromise Software Supply Chain
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I. Basic Information for CVE-2026-33026

Vulnerability Information
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Vulnerability Title
nginx-ui Backup Restore Allows Tampering with Encrypted Backups
Source: CVE Program / CVE List V5
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui backup restore mechanism allows attackers to tamper with encrypted backup archives and inject malicious configuration during restoration. This issue has been patched in version 2.3.4.
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
敏感数据的明文存储
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 2.3.4之前版本存在安全漏洞，该漏洞源于备份恢复机制允许攻击者篡改加密备份存档并在恢复过程中注入恶意配置。
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 < 2.3.4 -

II. Public POCs for CVE-2026-33026

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III. Intelligence Information for CVE-2026-33026

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Vendor Pages for CVE-2026-33026 (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-2026-33030 8.8 HIGH Nginx UI: Unencrypted Storage of DNS API Tokens and ACME Private Keys
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-2026-33027 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-312

V. Comments for CVE-2026-33026

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