CVE-2026-66707

Meta for WooCommerce <= 3.7.5 - Unauthenticated Stored Cross-Site Scripting

2026-07-31 00:00

Strategic Overview

Status: Patched in 3.7.6
Affected Plugin: Meta for WooCommerce
Affected Version: <= 3.7.5
CVSS: 7.2High
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-66707

View all Meta for WooCommerce vulnerabilities

At a glance

CVE-2026-66707 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Meta for WooCommerce WordPress plugin, affecting versions <= 3.7.5. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.7.6; sites on affected versions should update now. Disclosed July 2026, reported by Rafie Muhammad.

Vulnerability Overview

The Meta for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.7.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Meta for WooCommerce <= 3.7.5 takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Meta for WooCommerce the fix is 3.7.6: builds <= 3.7.5 are affected, anything from 3.7.6 onward is not.

Remediation

Update to version 3.7.6, or a newer patched version

How WordSec helps

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Meta for WooCommerce 3.7.6 closes this, and updating the plugin is the step that ends it.

Firewall
Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-66707 https://www.wordfence.com/threat-intel/vulnerabilities/id/3b0e83af-5abd-4b6e-b606-850c03b05036 https://nvd.nist.gov/vuln/detail/CVE-2026-66707

Related records

Other vulnerabilities in Meta for WooCommerce

CVSS Vector

7.2

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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