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…

PriorityP261high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.67%

49.9th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
pheditor	pheditor	—	—
pheditor	pheditor	>= 2.0.1 < 2.0.6	2.0.6

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