CVE-2026-8778CWE-434unrestricted-file-upload

CVE-2026-8778

Critical · published September 11, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
66.4
In the wild
Unconfirmed
What it is

The MIPL Grouped Checkout Fields for WooCommerce – Customize & Organize Checkout Fields. plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the `mipl_wc_upload_file` function in all versions up to, and including, 1.2.1. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01141 · 66.4th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-09-11T08:18Z
References (6)
https://plugins.trac.wordpress.org/browser/mipl-wc-checkout-fields/tags/1.2.1/include/class-mipl-wc-cf-checkout-block.php#L415 · [email protected]https://plugins.trac.wordpress.org/browser/mipl-wc-checkout-fields/tags/1.2.1/mipl-wc-checkout-fields.php#L260 · [email protected]https://plugins.trac.wordpress.org/browser/mipl-wc-checkout-fields/trunk/include/class-mipl-wc-cf-checkout-block.php#L415 · [email protected]https://plugins.trac.wordpress.org/browser/mipl-wc-checkout-fields/trunk/mipl-wc-checkout-fields.php#L260 · [email protected]https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3552029%40mipl-wc-checkout-fields%2Ftrunk%2Finclude%2Fclass-mipl-wc-cf-checkout-block.php&old=3549283%40mipl-wc-checkout-fields%2Ftrunk%2Finclude%2Fclass-mipl-wc-cf-checkout-block.php&sfp_email=&sfph_mail= · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/ac1257a9-7c8e-43aa-b21a-93a77b456aa4?source=cve · [email protected]
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 1%
    epss
  • 11 SEP 03:39Z
    MIPL Grouped Checkout Fields for WooCommerce <= 1.2.2 - Unauthenticated Arbitrary File Upload
    cvelistv5