What is CVE-2026-28289?

CVE-2026-28289 is a critical-severity vulnerability in Freescout, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2026-03-03.

How severe is CVE-2026-28289?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2026-28289 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Freescout

CVE-2026-28289

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 Remot…

Vulnerability class: Unrestricted File Upload

EPSS: 0.311 (98.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Freescout
Freescout-help-desk Freescout — versions < 1.8.207

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
af854a3a-2127-422b-91ae-364da2661108 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28289?: CVE-2026-28289 is a critical-severity vulnerability in Freescout, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 10.0/10. Published 2026-03-03.
How severe is CVE-2026-28289?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2026-28289 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.