What is CVE-2026-28289?

CVE-2026-28289 is a critical-severity vulnerability in Freescout-help-desk 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-help-desk 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: 0.162 (94.9th 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-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

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-5gpc-65p8-ffwp (x_refsource_CONFIRM)
https://github.com/freescout-help-desk/freescout/commit/f7bc16c56a6b13c06da52ad51fd666546b40818f (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-28289?: CVE-2026-28289 is a critical-severity vulnerability in Freescout-help-desk 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.