CVE-2026-10089
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.
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.36% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.3/insert-pages.php#L1771
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.3/insert-pages.php#L1789
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.3/insert-pages.php#L768
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.4/insert-pages.php#L1771
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.4/insert-pages.php#L1789
- https://plugins.trac.wordpress.org/browser/insert-pages/tags/3.11.4/insert-pages.php#L768
- https://plugins.trac.wordpress.org/changeset/3579298
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a4246181-d331-46b0-ad48-e2ece11b2f5f?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.