Is CVE-2026-27944 actively exploited?

CVE-2026-27944 has no public evidence of in-the-wild exploitation as of 2026-03-10.

What is the CVSS score for CVE-2026-27944?

CVE-2026-27944 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-27944?

Patch guidance is available from nginxui security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-27944.

Fix CVE-2026-27944 - CRITICAL nginxui nginx ui

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-306 · Missing Authentication CWE-311

Metadata

Primary Vendor: NGINXUI
Published: 3/5/2026
Last Modified: 3/10/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

nginxui : nginx_ui

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-27944. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-27944

View on NIST NVD

CVE-2026-27944 vulnerability