Is CVE-2026-28289 actively exploited?

No active exploitation of CVE-2026-28289 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28289 be exploited remotely?

Yes. CVE-2026-28289 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28289?

CVE-2026-28289 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-28289

HIGH

CVE-2026-28289

CWE-434Published: March 3, 2026· Updated: Mar 5, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-28289 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.5.