CVE-2021-24171 json
WooCommerce Upload Files < 59.4 - Unauthenticated Arbitrary File Upload
published 2021-04-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11085
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- vanquish woocommerce_upload_files 59.4
Exploit prediction
1.90% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Unknown WooCommerce Upload Files
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
-
wpscan.com
/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194
third-party-advisory
-
wordfence.com
/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files/
third-party-advisory
Sources
- CVE List CVE-2021-24171
- NVD CVE-2021-24171
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