CVE-2026-10089: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in figureone Insert Pages
The Insert Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post custom field keys (meta key names) in all versions up to, and including, 3.11.4. This is due to insufficient output escaping in the the_meta() function: while the custom field VALUE is sanitized with wp_kses_post(), the custom field KEY ($key) is interpolated into the rendered HTML (lines 1786-1791) and echoed (line 1806) without any escaping when an inserted page is rendered with the [insert page='ID' display='all'] shortcode. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AI Analysis
Technical Summary
CVE-2026-10089 is a stored cross-site scripting vulnerability in the Insert Pages WordPress plugin by figureone. The issue is due to insufficient output escaping of post custom field keys in the the_meta() function. While the custom field values are sanitized using wp_kses_post(), the keys are directly interpolated into HTML and echoed without escaping. This allows authenticated users with author privileges or higher to inject arbitrary scripts into pages rendered with the [insert page='ID' display='all'] shortcode, leading to script execution in the context of users viewing those pages.
Potential Impact
An attacker with author-level access or higher can inject malicious JavaScript into pages via custom field keys. This script executes in the browsers of users who view the injected pages, potentially leading to session hijacking, privilege escalation, or other client-side attacks. The vulnerability affects confidentiality and integrity of user sessions but does not impact availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict author-level access to trusted users only and consider disabling the Insert Pages plugin or avoiding use of the [insert page='ID' display='all'] shortcode with untrusted content. Monitor official figureone communications for updates and patches.
CVE-2026-10089: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in figureone Insert Pages
Description
The Insert Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post custom field keys (meta key names) in all versions up to, and including, 3.11.4. This is due to insufficient output escaping in the the_meta() function: while the custom field VALUE is sanitized with wp_kses_post(), the custom field KEY ($key) is interpolated into the rendered HTML (lines 1786-1791) and echoed (line 1806) without any escaping when an inserted page is rendered with the [insert page='ID' display='all'] shortcode. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS v3.1
Score 6.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-10089 is a stored cross-site scripting vulnerability in the Insert Pages WordPress plugin by figureone. The issue is due to insufficient output escaping of post custom field keys in the the_meta() function. While the custom field values are sanitized using wp_kses_post(), the keys are directly interpolated into HTML and echoed without escaping. This allows authenticated users with author privileges or higher to inject arbitrary scripts into pages rendered with the [insert page='ID' display='all'] shortcode, leading to script execution in the context of users viewing those pages.
Potential Impact
An attacker with author-level access or higher can inject malicious JavaScript into pages via custom field keys. This script executes in the browsers of users who view the injected pages, potentially leading to session hijacking, privilege escalation, or other client-side attacks. The vulnerability affects confidentiality and integrity of user sessions but does not impact availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict author-level access to trusted users only and consider disabling the Insert Pages plugin or avoiding use of the [insert page='ID' display='all'] shortcode with untrusted content. Monitor official figureone communications for updates and patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-05-29T13:27:15.359Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a46037a27e9c7971942c629
Added to database: 07/02/2026, 06:21:46 UTC
Last enriched: 07/02/2026, 06:37:24 UTC
Last updated: 07/02/2026, 23:32:22 UTC
Views: 7
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