CVE-2026-55579

CRITICAL CVSS 3.1: 9.8
Updated Jul 27, 2026
PHP
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions before 2.0.6
Fixed In 2.0.6
Type CWE-798 (Hardcoded Credentials)
Vendor PHP
Public PoC No

Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, Pheditor ships with a hardcoded default password admin (SHA-512 hash stored at pheditor.php:11). There is no mechanism to force a password change on first login.

Any deployment using the default credentials grants an attacker full access to the file editor, file upload, and terminal features, enabling arbitrary file read/write and remote code execution. This issue has been patched in version 2.0.6.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1