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        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-02-26T01:52:58.735Z",
        "datePublished": "2026-03-03T22:59:08.679Z",
        "dateUpdated": "2026-03-05T21:09:30.846Z"
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            "title": "FreeScout 1.8.206 Patch Bypass for CVE-2026-27636 via Zero-Width Space Character Leads to Remote Code Execution",
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                            "cweId": "CWE-434",
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                            "description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
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                        "attackVector": "NETWORK",
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                        "baseScore": 10,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
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                    "name": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-5gpc-65p8-ffwp",
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                            "version": "< 1.8.207",
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                    "value": "FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A patch bypass vulnerability for CVE-2026-27636 in FreeScout 1.8.206 and earlier allows any authenticated user with file upload permissions to achieve Remote Code Execution (RCE) on the server by uploading a malicious .htaccess file using a zero-width space character prefix to bypass the security check. The vulnerability exists in the sanitizeUploadedFileName() function in app/Http/Helper.php. The function contains a Time-of-Check to Time-of-Use (TOCTOU) flaw where the dot-prefix check occurs before sanitization removes invisible characters. This vulnerability is fixed in 1.8.207."
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                "advisory": "GHSA-5gpc-65p8-ffwp",
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                                "timestamp": "2026-03-04T16:04:55.522646Z",
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                "references": [
                    {
                        "url": "https://www.ox.security/blog/freescout-rce-cve-2026-28289/"
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