CVE-2026-103688 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-434

References

https://wpscan.com/vulnerability/08777aa1-6308-4e99-b2d0-5e43209aa6a6/

FAQ

What is CVE-2026-103688?

CVE-2026-103688 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 accep...

How severe is CVE-2026-103688?

CVE-2026-103688 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-103688?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.