PT-2026-39515 · WordPress · Download From Files

Spacehen · Published 2026-05-10 · Updated 2026-05-10 · CVE-2021-47940

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Download From Files versions prior to 1.49

Description An arbitrary file upload flaw allows unauthenticated attackers to upload malicious files by exploiting the AJAX fileupload action. Attackers can send POST requests to the 'admin-ajax.php' endpoint using the download from files 617 fileupload action. By manipulating the allowExt parameter, they can bypass file type restrictions to upload executable files, such as PHP shells, to the web root.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2021-47940

Affected Products

Download From Files

References · 5

• 🔥 https://exploit-db.com/exploits/50287 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47940 · Security Note
• https://twitter.com/KaitanSecurity/status/2053467620087566542 · Twitter Post
• https://vulncheck.com/advisories/wordpress-download-from-files-arbitrary-file-upload · Note
• https://wordpress.org/plugins/download-from-files · Note