How serious is CVE-2026-3231?

This vulnerability has a CVSS score of 7.2 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-3231?

Yes, proof-of-concept exploit code for CVE-2026-3231 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-3231?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2026-3231?

To remediate CVE-2026-3231, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-3231

High

|7.2

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows attackers to inject malicious scripts into the WooCommerce checkout process, which can then run when an administrator views the order details. It can be exploited by anyone, even without authentication, by submitting specially crafted data through the checkout API.

Technical Description

The Checkout Field Editor (Checkout Manager) for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom radio and checkboxgroup field values submitted through the WooCommerce Block Checkout Store API in all versions up to, and including, 2.1.7. This is due to the `prepare_single_field_data()` method in `class-thwcfd-block-order-data.php` first escaping values with `esc_html()` then immediately reversing the escaping with `html_entity_decode()` for radio and checkboxgroup field types, combined with a permissive `wp_kses()` allowlist in `get_allowed_html()` that explicitly permits the `<select>` element with the `onchange` event handler attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts via the Store API checkout endpoint that execute when an administrator views the order details page.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactLow

Integrity ImpactLow

Availability ImpactNone

ScopeChanged

Vector String

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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$1,421($1K-$5K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Mar 11, 2026

28 days ago

Last Modified

Mar 11, 2026

28 days ago