Schema App Structured Data Plugin up to 2.3.2 on WordPress Remove Microdata Output Filter cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in Schema App Structured Data Plugin up to 2.3.2. This affects an unknown part of the component Remove Microdata Output Filter. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2026-96666. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Schema App Structured Data Plugin up to 2.3.2 and classified as problematic. Affected by this vulnerability is some unknown processing of the component Remove Microdata Output Filter. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

The Schema App Structured Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via 'Remove Microdata' Output Filter in all versions up to, and including, 2.3.2 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. Exploitation requires that an administrator has enabled the plugin's 'Remove Microdata' option and approves the malicious comment.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-96666 since 09/23/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-112589). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Schema App Structured Data Plugin

Version

• 2.3.0
• 2.3.1
• 2.3.2

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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