CVE-2026-55579 | Pheditor is a single-file editor and file manager written in… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-55579
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-16 23:18 UTC
Published: 2026-07-27 17:54 UTC
Last updated: 2026-07-27 18:59 UTC
Primary CWE: CWE-798
CWE-798: Use of Hard-coded Credentials
Vendor / Product: pheditor / pheditor
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
pheditor	pheditor	—	>= 2.0.1, < 2.0.6

Weakness (CWE)

CWE	Source	Description
CWE-798	cna	CWE-798: Use of Hard-coded Credentials

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

https://github.com/pheditor/pheditor/security/advisories/GHSA-p4h7-p9rj-2pq2 https://github.com/pheditor/pheditor/security/advisories/GHSA-p4h7-p9rj-2pq2
https://github.com/pheditor/pheditor/releases/tag/2.0.6 https://github.com/pheditor/pheditor/releases/tag/2.0.6