{"api_version":"1","generated_at":"2026-07-27T20:48:57+00:00","cve":"CVE-2026-55578","urls":{"html":"https://cve.report/CVE-2026-55578","api":"https://cve.report/api/cve/CVE-2026-55578.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-55578","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55578"},"summary":{"title":"Pheditor: Incomplete command sanitization in terminal feature allows RCE via pipe operator, backtick substitution, and newline injection","description":"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. 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