Arbitrary file upload in Vanquish Woocommerce_upload_files

CVE-2021-24171

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 wi…

Vulnerability class: Unrestricted File Upload

EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-24171?
CVE-2021-24171 is a critical-severity vulnerability in Vanquish Woocommerce_upload_files, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-04-05.
How severe is CVE-2021-24171?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-24171 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.