CVE-2026-28133

HIGH 8.5

WordPress Filr plugin <= 1.2.14 - Arbitrary File Upload vulnerability

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

12th

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.

CWE	CWE-434
Vendor	wp chill
Product	filr
Published	Mar 5, 2026
Last Updated	Apr 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

WP Chill / Filr

0 ≤ 1.2.14

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/filr-protection/vulnerability/wordpress-filr-plugin-1-2-12-arbitrary-file-upload-vulnerability?_s_id=cve

Credits

Que Thanh Tuan | Patchstack Bug Bounty Program