CVE-2021-47940CWE-306

WordPress Download From Files 1.48 Arbitrary File Upload

Critical · published May 10, 2026

CVSS v4.0
9.3
EPSS
0%
Percentile
32.6
In the wild
Unconfirmed
What it is

WordPress Plugin Download From Files version 1.48 and earlier contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious files by exploiting the AJAX fileupload action. Attackers can send POST requests to the admin-ajax.php endpoint with the download_from_files_617_fileupload action, manipulating the allowExt parameter to bypass file type restrictions and upload executable files like PHP shells to the web root.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00396 · 32.6th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-05-10T12:43Z
EPSS history
Timeline
  • 10 MAY 12:43Z
    WordPress Download From Files 1.48 Arbitrary File Upload
    cvelistv5