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CVE-2021-24171

CRITICAL 9.8 CVSS 3.1
Published
April 5, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-434
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The WooCommerce Upload Files WordPress plugin before 59.4 ran a single sanitization pass to remove blocked extensions such as .php. It was possible to bypass this and upload a file with a PHP extension by embedding a "blocked" extension within another "blocked" extension in the "wcuf_file_name" parameter. It was also possible to perform a double extension attack and upload files to a different location via path traversal using the "wcuf_current_upload_session_id" parameter.

Affected products and versions

  • Unknown WooCommerce Upload Files — From 59.4 (including) to 59.4 (excluding)
  • vanquish woocommerce_upload_files — Before 59.4

References

  • wpscan.com https://wpscan.com/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194 Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files/ Third Party Advisory
  • nvd.nist.gov Official NVD record