CVE-2026-28133 PUBLISHED

WordPress Filr plugin <= 1.2.12 - Arbitrary File Upload vulnerability

Assigner: Patchstack
Reserved: 25.02.2026 Published: 05.03.2026 Updated: 05.03.2026

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 <= 1.2.12.

Product Status

Vendor	WP Chill
Product	Filr
Versions	Default: unaffected affected from n/a to <= 1.2.12 (incl.)

Credits

Que Thanh Tuan | Patchstack Bug Bounty Program finder

References

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

Problem Types

Unrestricted Upload of File with Dangerous Type CWE

Impacts

Upload a Web Shell to a Web Server