AUGUST 4, 2026
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Case File

CVE-2026-27944

CRITICAL · CVSS 9.8 EPSS 22.16% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-03-05 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Nginx. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 22.2% probability of exploitation in the next 30 days. Exploitation may require the attacker to be authenticated.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-27944
Severity
CRITICAL
CVSS
9.8
EPSS
22.16%
Nginx

Original NVD 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.

Related CVEs

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