What is CVE-2026-28133?

CVE-2026-28133 is a high-severity vulnerability in Wp Chill Filr, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.5/10. Published 2026-03-05.

How severe is CVE-2026-28133?

High severity. CVSS v3 base score is 8.5 out of 10.

Arbitrary file upload in Wp Chill Filr

CVE-2026-28133

Unrestricted Upload of File with Dangerous Type vulnerability in WP Chill Filr filr-protection allows Upload a Web Shell to a Web Server.This issue affects Filr: from n/a through <= 1.2.14.

Vulnerability class: Unrestricted File Upload

EPSS: 0.002 (11.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Wp Chill Filr — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-28133?: CVE-2026-28133 is a high-severity vulnerability in Wp Chill Filr, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.5/10. Published 2026-03-05.
How severe is CVE-2026-28133?: High severity. CVSS v3 base score is 8.5 out of 10.