WooCommerce Modal Fly Cart + Ajax add to cart - Reflected cross-site scripting (XSS)

Summary

Name	WooCommerce Modal Fly Cart + Ajax add to cart 1.1.1 - Reflected cross-site scripting (XSS)
Code name	skims-42
Product	WooCommerce Modal Fly Cart + Ajax add to cart
Affected versions	Version 1.1.1
State	Private
Release date	2025-01-03

Vulnerability

Kind	Reflected cross-site scripting (XSS)
Rule	Reflected cross-site scripting (XSS)
Remote	No
CVSSv4 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/E:U
Exploit available	No
CVE ID(s)	cve-2020-2020

Description

WooCommerce Modal Fly Cart + Ajax add to cart 1.1.1 was found to be vulnerable. The web application dynamically generates web content without validating the source of the potentially untrusted data in myapp/inc/class-frontend.php.

Vulnerability

Skims by Fluid Attacks discovered a Reflected cross-site scripting (XSS) in WooCommerce Modal Fly Cart + Ajax add to cart 1.1.1. The following is the output of the tool:

Skims output

 129 | )
 130 | );
 131 |
 132 |
 133 | }
 134 |
 135 |
 136 |
 137 | public function so_27270880_add_variation_to_cart() {
 138 |
> 139 |    echo $_POST['product_id'];
  140 |    exit ;
  141 |    ob_start();
  142 |
  143 |    $product_id        = apply_filters( 'woocommerce_add_to_cart_product_id', absint( $_POST['product_id'] ) );
  144 |    $quantity          = empty( $_POST['quantity'] ) ? 1 : wc_stock_amount( $_POST['quantity'] );
  145 |
  146 |    $variation_id      = isset( $_POST['variation_id'] ) ? absint( $_POST['variation_id'] ) : '';
  147 |    $variations         = ! empty( $_POST['variation'] ) ? (array) $_POST['variation'] : '';
  148 |
  149 |    $passed_validation = apply_filters( 'woocommerce_add_to_cart_validation', true, $product_id, $quantity, $variation_id,
      ^ Col 0

Our security policy

We have reserved the ID cve-2020-2020 to refer to this issue from now on.

• https://fluidattacks.com/advisories/policy/

System Information

• Version: WooCommerce Modal Fly Cart + Ajax add

to cart 1.1.1

Mitigation

There is currently no patch available for this vulnerability.

Credits

The vulnerability was discovered by Andres Roldan from Fluid Attacks' Offensive Team using Skims

Timeline