CVE-2026-27944 - Vulnerability Analysis
CriticalCVSS: 9.8Last Updated: March 5, 2026
Nginx UI - Information Disclosure
Published: March 5, 2026Updated: March 5, 2026Remote Exploitable
Overview
Nginx UI < 2.3.3 contains an information disclosure vulnerability caused by unauthenticated access to /api/backup endpoint exposing encryption keys in X-Backup-Security header, letting unauthenticated attackers download and decrypt full system backups.
Severity & Score
Severity: Critical
CVSS Score: 9.8
Impact
Unauthenticated attackers can access and decrypt full system backups, exposing sensitive data including credentials and private keys.
Mitigation
Upgrade to version 2.3.3 or later.
Related Resources
Details
- CVE ID
- CVE-2026-27944
- Severity
- Critical
- CVSS Score
- 9.8
- Type
- broken_access_control
- Status
- unconfirmed
CWE
- CWE-306
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H