---
title: "CVE-2026-96666: Schema App Structured Data WordPress Plugin - Stored XSS"
description: "Schema App Structured Data WordPress plugin <= 2.3.2 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in 'Remove Microdata' output filter, letting unauthenticated attackers inject scripts executed by users, exploit requires admin to enable 'Remove Microdata' and approve malicious comment."
url: https://panop.io/threat-heartbeat/CVE-2026-96666/
---

# CVE-2026-96666 Schema App Structured Data WordPress Plugin - Stored XSS

Schema App Structured Data WordPress plugin <= 2.3.2 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in 'Remove Microdata' output filter, letting unauthenticated attackers inject scripts executed by users, exploit requires admin to enable 'Remove Microdata' and approve malicious comment.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-96666)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

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

Published

29 October 2026

Updated

29 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to a version later than 2.3.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-96666](https://nvd.nist.gov/vuln/detail/CVE-2026-96666)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/7e0a6ba5-6b2a-49b2-8780-df5eb6a5eecd?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/7e0a6ba5-6b2a-49b2-8780-df5eb6a5eecd?source=cve)
- [https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L40](https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L40)
- [https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L541](https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L541)
- [https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L547](https://plugins.trac.wordpress.org/browser/schema-app-structured-data-for-schemaorg/tags/2.3.2/lib/SchemaFront.php#L547)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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