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Vulnerabilities

Vulnerability · CVE-2020-36731

wpdesk flexible_checkout_fields Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Published Feb 27, 2020 · catalog updated Feb 27, 2020 · wpdesk flexible_checkout_fields Improper Neutralization

Patch now

CVE-2020-36731 is in the CISA known-exploited catalog. Confirm wpdesk flexible_checkout_fields Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (wpdesk flexible_checkout_fields Improper Neutralization).
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.34%
Remediation
Remediation guidance
Affected products
stated flexible_checkout_fields · vendor wpdesk flexible_checkout_fields

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated flexible_checkout_fields<= 2.3.1
  • vendor wpdesk flexible_checkout_fieldsversion unspecified

How to fix CVE-2020-36731

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-36731 is in the CISA known-exploited catalog. Confirm wpdesk flexible_checkout_fields Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with <= 2.3.1. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.34%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2020 · VulnCheck KEV

    Detected

    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

  2. Feb 27, 2020 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2020-36731

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-36731

    30-day exploitation probability 1.3%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2020-36731

    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 updateSettin

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.