CVE-2026-55578

🎯 CVE-2026-55578 🧪 PoC 🇪🇺 EUVD

💬 0 Diskussion 📄 .md Alle CVEs anzeigen ✕

CVE-2026-55578 | Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, the terminal feature in Pheditor uses an incomplete character blocklist to sanitize user-supplied commands before passing them to shell_exec(). After the fix for GHSA-9643-6xjp-vx57 (which added $ to the blocklist), the characters | (single pipe), ` (backtick), and the newline byte (0x0A) remain unblocked. An authenticated user with the terminal permi

Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, the terminal feature in Pheditor uses an incomplete character blocklist to sanitize user-supplied commands before passing them to shell_exec(). After the fix for GHSA-9643-6xjp-vx57 (which added $ to the blocklist), the characters | (single pipe), ` (backtick), and the newline byte (0x0A) remain unblocked. An authenticated user with the terminal permission (enabled by default) can leverage any of these to bypass the TERMINAL_COMMANDS allowlist and execute arbitrary OS commands as the web server user. This issue has been patched in version 2.0.6.

Klassifikation & Betroffenheit:

CWE-78 pheditor pheditor 2.0.1, < 2.0.6

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') 🎯 High

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

🛡️ Empfohlene Mitigation: If at all possible, use library calls rather than external processes to recreate the desired functionality.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-6 · Argument Injection (High) CAPEC-15 · Command Delimiters (High) CAPEC-43 · Exploiting Multiple Input Interpretation… (High) CAPEC-88 · OS Command Injection (High) CAPEC-108 · Command Line Execution through SQL Injec… (Very High)

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-48030 9.9 CVE-2026-55579 9.8 CVE-2024-45252 9.8 CVE-2024-45251 9.8 CVE-2024-42757 9.8

🩹 Patch verfügbar (OSV):

🩹 a64eb935ce699e43f1ea60e46d47f33e2f87ffd6 (Commit)

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 07/2026

Heute 31.10.

CVSS-Vektor-Analyse: 8.8

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

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

CNA-Bewertung (GitHub_M): 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:27.07.2026

Aktualisiert:28.07.2026 15:17

Assigner (CNA):GitHub_M

EUVD-ID:EUVD-2026-49386

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-78 ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	CVEs	Anteil
≥90 %	744	0,2 %
≥50 %	3.226	0,8 %
≥10 %	22.059	5,8 %
<10 %	354.700	93,2 %

8.8 HIGH

EPSS

0.7%

CVE-2026-55578 🌐 Netzwerk (Remote) 🔑 Geringe Nutzerrechte nötig

pheditor

CVE-2026-55578 | Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, the terminal feature in Pheditor uses an incomplete character blocklist to sanitize user-supplied commands before passing them to shell_exec(). After the fix for GHSA-9643-6xjp-vx57 (which added $ to the blocklist), the characters | (single pipe), ` (backtick), and the newline byte (0x0A) remain unblocked. An authenticated user with the terminal permi

CWE-78 ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

vor 3 Monaten ↻ vor 3 Monaten

🛡️ Details ➔

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