CVE-2026-55578
CVE-2026-55578 · Pheditor: Incomplete command sanitization in terminal feature allows RCE via pipe operator, backtick substitution, and newline injection
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 0.7% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
pheditor
- Versions
- >= 2.0.1, < 2.0.6: Affected
No fix published
pheditor/pheditor Packagist
- Versions
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- Affected ranges
- ECOSYSTEM: ≥ 2.0.1, < 2.0.6
Update to 2.0.6