{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55578", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T23:18:03.169Z", "datePublished": "2026-07-27T17:54:29.407Z", "dateUpdated": "2026-07-28T14:03:57.628Z"}, "containers": {"cna": {"title": "Pheditor: Incomplete command sanitization in terminal feature allows RCE via pipe operator, backtick substitution, and newline injection", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/pheditor/pheditor/security/advisories/GHSA-wg4w-wr5q-6vjc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pheditor/pheditor/security/advisories/GHSA-wg4w-wr5q-6vjc"}, {"name": "https://github.com/advisories/GHSA-9643-6xjp-vx57", "tags": ["x_refsource_MISC"], "url": "https://github.com/advisories/GHSA-9643-6xjp-vx57"}, {"name": "https://github.com/pheditor/pheditor/releases/tag/2.0.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/pheditor/pheditor/releases/tag/2.0.6"}], "affected": [{"vendor": "pheditor", "product": "pheditor", "versions": [{"version": ">= 2.0.1, < 2.0.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-27T17:54:29.407Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-wg4w-wr5q-6vjc", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/pheditor/pheditor/security/advisories/GHSA-wg4w-wr5q-6vjc", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-28T14:03:49.769768Z", "id": "CVE-2026-55578", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-28T14:03:57.628Z"}}]}}

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