CVE-2020-36731

HIGH EXPLOITED NUCLEI

Flexible Checkout Fields for WooCommerce < 2.3.1 - Unauthenticated Arbitrary Plugin Settings Update & Stored XSS

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2020-36731 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.

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)

Core 3

Scores

CVSS v3 7.2
EPSS 0.0134
EPSS Percentile 67.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2020-02-27
CWE
CWE-79
Status published
Products (3)
wpdesk/Flexible Checkout Fields for WooCommerce – WooCommerce Checkout Manager < 2.3.2
wpdesk/flexible_checkout_fields < 2.3.1
wpdesk/flexible_checkout_fields_for_woocommerce < 2.3.1
Published Jun 07, 2023
Tracked Since Feb 18, 2026