Critical severity · published Oct 28, 2026
CVE-2026-103688
Checkout Files Upload for WooCommerce < 2.4.0 - Unauthenticated Arbitrary File Upload
New
9.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Checkout Files Upload for WooCommerce ·
before 2.4.0 · source: vendor
Affected product
CF
Checkout Files Upload for WooCommerce