---
cve: "CVE-2026-55579"
severity: "CRITICAL"
cvss: 9.8
epss: "0.8%"
vendor: "pheditor"
kev: false
exploited: false
published: "2026-07-27 17:54:45"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-02T18:47:27+01:00"
---

# CVE-2026-55579

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-07-27 18:59:35
- CNA-CVSS: **9.8** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-798** — Use of Hard-coded Credentials
  The product contains hard-coded credentials, such as a password or cryptographic key.

## Angriffsmuster (CAPEC)

- [CAPEC-70 — Try Common or Default Usernames and Passwords](https://capec.mitre.org/data/definitions/70.html) _(Severity: High)_
- [CAPEC-191 — Read Sensitive Constants Within an Executable](https://capec.mitre.org/data/definitions/191.html) _(Severity: Low)_

## ATT&CK-Techniken

- [T1078.001 — Valid Accounts:Default Accounts](https://attack.mitre.org/techniques/T1078/001/)
- [T1552.001 — Unsecured Credentials:Credentials in files](https://attack.mitre.org/techniques/T1552/001/)

## Patch verfügbar (OSV)

- a64eb935ce699e43f1ea60e46d47f33e2f87ffd6 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-55579/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_