Arbitrary file upload in Checkout Files Upload For Woocommerce
CVE-2026-103688
The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.0 does not validate uploaded file types when its accepted file types setting is left empty, which it documents as the way to accept all files, allowing unauthenticated users to upload arbitrary files, including PHP files that lead to remote code execution on servers that execute PHP from the uploads directory.
Vulnerability class: Unrestricted File Upload
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (15.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Checkout Files Upload For Woocommerce
Weakness classification (CWE)
References
- wpscan.com/vulnerability/08777aa1-6308-4e99-b2d0-5e43209aa6a6/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-103688?
- CVE-2026-103688 is a critical-severity vulnerability in Checkout Files Upload For Woocommerce, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-10-28.
- How severe is CVE-2026-103688?
- Critical severity. CVSS v3 base score is 9.8 out of 10.