CVE Feed

    Dashboard / CVE / CVE-2026-27944

    CVE-2026-27944

    Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.3, the /api/backup endpoint is accessible without authentication and discloses the encryption keys required to decrypt the backup in the X-Backup-Security response header. This allows an unauthenticated attacker to download a full system backup containing sensitive data (user credentials, session tokens, SSL private keys, Nginx configurations) and decrypt it immediately. This issue has been patched in version 2.3.3.

    Published:Mar 5, 2026
    Last Modified:Apr 21, 2026
    EPS:Mar 5, 2026
    EPSS Score:0.07395
    CVSS Score:9.8

    Affected Products

    Vendor
    0xjacky
    Product
    Nginx-ui
    Vendor
    Nginxui
    Product
    Nginx Ui

    Exploits

    https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-g9w5-qffc-6762https://github.com/BimaBalance/Cve-2026-27944-Tools-Exploithttps://github.com/Goultarde/CVE-2026-27944-pochttps://github.com/jake-young-dev/CVE-2026-27944https://github.com/karimelsheikh1/HTB-Snapped-Writeuphttps://github.com/NULL200OK/CVE-2026-27944https://github.com/NULL200OK/-nginxui_discoverhttps://github.com/Skynoxk/CVE-2026-27944https://github.com/weefunker/CVE-2026-27944-Lab

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-12 Choosing Message Identifier
    CAPEC-157 Sniffing Attacks
    CAPEC-158 Sniffing Network Traffic
    CAPEC-166 Force the System to Reset Values
    CAPEC-204 Lifting Sensitive Data Embedded in Cache
    CAPEC-216 Communication Channel Manipulation
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-36 Using Unpublished Interfaces or Functionality
    CAPEC-37 Retrieve Embedded Sensitive Data
    CAPEC-383 Harvesting Information via API Event Monitoring
    CAPEC-384 Application API Message Manipulation via Man-in-the-Middle
    CAPEC-385 Transaction or Event Tampering via Application API Manipulation
    CAPEC-386 Application API Navigation Remapping
    CAPEC-387 Navigation Remapping To Propagate Malicious Content
    CAPEC-388 Application API Button Hijacking
    CAPEC-477 Signature Spoofing by Mixing Signed and Unsigned Content
    CAPEC-609 Cellular Traffic Intercept
    CAPEC-62 Cross Site Request Forgery
    CAPEC-65 Sniff Application Code

    Related CVEs

    CVE-2026-44015 (CVSS 8.5) — Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can per…
    CVE-2026-42238 (CVSS 9) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, nginx-ui exposes a backup r…
    CVE-2026-42223 (CVSS 6.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, the GetSettings API handler…
    CVE-2026-42222 (CVSS 8.1) — Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap take…
    CVE-2026-42221 (CVSS 8.1) — Nginx UI is a web user interface for the Nginx web server. From version 2.0.0 to before version 2.3.8, an unau…
    CVE-2026-42220 (CVSS 6.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can c…
    CVE-2026-34403 (CVSS 5.5) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.5, all WebSocket endpoints in …
    CVE-2026-33031 (CVSS 8.6) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, a user who was disabled by …
    CVE-2026-33026 (CVSS 9.4) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui backup restore…
    CVE-2026-33027 (CVSS 6.9) — Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High