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Tue, 21 Jul 2026 15:30:00 +0000
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ssvc
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Mon, 20 Jul 2026 22:45:00 +0000
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Freescout Helpdesk
Freescout Helpdesk freescout |
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| Vendors & Products |
Freescout Helpdesk
Freescout Helpdesk freescout |
Mon, 20 Jul 2026 20:00:00 +0000
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| Description | 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. | |
| Title | FreeScout Vulnerable to Authenticated Remote Code Execution via incomplete upload extension denylist (.pht) — bypass of CVE-2025-48471 | |
| Weaknesses | CWE-434 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-21T14:56:31.717Z
Reserved: 2026-06-09T19:39:52.403Z
Link: CVE-2026-53593
Updated: 2026-07-21T13:21:14.446Z
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OpenCVE Enrichment
Updated: 2026-07-20T22:30:18Z