{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53593", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T19:39:52.403Z", "datePublished": "2026-07-20T19:52:33.060Z", "dateUpdated": "2026-07-20T19:52:33.060Z"}, "containers": {"cna": {"title": "FreeScout Vulnerable to Authenticated Remote Code Execution via incomplete upload extension denylist (.pht) \u2014 bypass of CVE-2025-48471", "problemTypes": [{"descriptions": [{"cweId": "CWE-434", "lang": "en", "description": "CWE-434: Unrestricted Upload of File with Dangerous Type", "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/freescout-help-desk/freescout/security/advisories/GHSA-27vp-fpg8-j8wv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-27vp-fpg8-j8wv"}], "affected": [{"vendor": "freescout-help-desk", "product": "freescout", "versions": [{"version": "< 1.8.224", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-20T19:52:33.060Z"}, "descriptions": [{"lang": "en", "value": "FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the denylist that neutralizes dangerous file uploads (`Helper::$restricted_extensions`) is incomplete: it does not cover the `.pht` extension. The authenticated upload endpoint `POST /uploads/upload` (`SecureController@upload`) stores files with their original extension into the web-accessible directory `storage/app/public/uploads/` (served at `/storage/uploads/`). On the standard Apache + `libapache2-mod-php` deployment, the default handler `<FilesMatch \".+\\.ph(ar|p[3457]?|t|tml)$\">` executes `.pht`, so **any authenticated agent can upload a `.pht` web shell and run arbitrary commands as the web-server user** (`www-data`). This is a direct bypass of the fix for CVE-2025-48471, which added `phtml`/`phar` but not `pht` (nor `phtm`, `phps`). Version 1.8.224 contains an updated fix."}], "source": {"advisory": "GHSA-27vp-fpg8-j8wv", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.8.224)"}}], "enrichment": {"confidence": 98.0, "confidence_source": "matching", "scores": [{"score": 98.0, "source": "matching"}]}, "original": {"product": "freescout", "source": "cna", "vendor": "freescout-help-desk"}, "product": "freescout", "vendor": "freescout_helpdesk"}], "created": "2026-07-20T22:30:18.907073+00:00", "updated": "2026-07-20T22:30:18.907123+00:00", "vendors": ["freescout_helpdesk", "freescout_helpdesk$PRODUCT$freescout"]}