CVE-2026-10089
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk12th percentile — higher than 12% of all known CVEs
Summary
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 of the custom field key ($key) in the the_meta() function, while the field value is properly sanitized. Authenticated attackers with author-level access or above can inject arbitrary web scripts that execute when a user views an injected page.
Risk Assessment
The risk for the organization includes potential session hijacking, data theft, or malware distribution through script execution in victims' browsers when visiting compromised pages.
Recommendation
Immediately update the Insert Pages plugin to the latest available version that fixes this vulnerability. If no update is available, temporarily disable the plugin or restrict page insertion functionality to trusted users only.
Original NVD description (English source)
The Insert Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post custom field keys (meta key names) in all versions up to, and including, 3.11.4. This is due to insufficient output escaping in the the_meta() function: while the custom field VALUE is sanitized with wp_kses_post(), the custom field KEY ($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.