CVSS v3
10
CRITICAL
EPSS Score
22.3%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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 contain
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 contain
Active exploitation of CVE-2026-28289 has not been confirmed. The EPSS score is 22.3%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2026-28289 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string 3.1.
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Ranked by exploit probability (EPSS).