High severity · published Mar 5, 2026
CVE-2026-28133
WordPress Filr plugin <= 1.2.14 - Arbitrary File Upload vulnerability
8.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Filr · WP Chill
through 1.2.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28133
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28133
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/filr-protection/vulnerability/wordpress-filr-plugin-1-2-12-arbitrary-file-upload-vulnerability?_s_id=cve
More from Filr
7.7
CVE-2025-64230
WordPress Filr plugin <= 1.2.10 - Arbitrary File Deletion vulnerability