CVE-2020-36731

HIGH EXPLOITED NUCLEI

WooCommerce <2.3.1 - XSS

Title source: llm

Description

The Flexible Checkout Fields for WooCommerce plugin for WordPress is vulnerable to Unauthenticated Arbitrary Plugin Settings update, in addition to Stored Cross-Site Scripting in versions up to, and including, 2.3.1. This is due to missing authorization checks on the updateSettingsAction() function which is called via an admin_init hook, along with missing sanitization and escaping on the settings that are stored.

Nuclei Templates (1)

Flexible Checkout Fields for WooCommerce <= 2.3.1 - Unauthenticated Arbitrary Plugin Settings Update

HIGHby popcorn94

FOFA: body="/wp-content/plugins/flexible-checkout-fields/"

References (3)

[Exploit] https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-flexible-checkout-fields-for-woocommerce-plugin/

[Exploit] https://www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities/

[Third Party Advisory] https://www.wordfence.com/threat-intel/vulnerabilities/id/fd12a952-2e99-41f7-b74c-55c2b7d8deed?source=cve

Scores

CVSS v3 7.2

EPSS 0.1947

EPSS Percentile 95.4%

Attack Vector NETWORK

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

Details

VulnCheck KEV 2020-02-27

CWE

CWE-79

Status published

Products (3)

wpdesk/flexible_checkout_fields < 2.3.1

wpdesk/flexible_checkout_fields_for_woocommerce < 2.3.1

wpdesk/Flexible Checkout Fields for WooCommerce – WooCommerce Checkout Manager < 2.3.2

Published Jun 07, 2023

Tracked Since Feb 18, 2026