CVE-2021-24171

WooCommerce Upload Files < 59.4 - Unauthenticated Arbitrary File Upload

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.61%
Third-Party Advisory wpscan.com Third-Party Advisory wordfence.com
Affected: Unknown WooCommerce Upload Files
Published at:
Updated at:

References

Link Tags
https://wpscan.com/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194 third party advisory
https://www.wordfence.com/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-24171?
CVE-2021-24171 has been scored as a critical severity vulnerability.
How to fix CVE-2021-24171?
To fix CVE-2021-24171, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24171 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-24171 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24171?
CVE-2021-24171 affects Unknown WooCommerce Upload Files.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.