{"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"}}]}}