CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-24171
Critical (9.8) in vanquish woocommerce upload files. EPSS 1.9% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
- CWE
- CWE-434
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vanquish:woocommerce_upload_files
References
- https://wpscan.com/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194
- https://www.wordfence.com/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files/
- https://wpscan.com/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194
- https://www.wordfence.com/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files/