WordPress security changelog
HIGH CVE-2026-100107 Deferred

Kubio AI Page Builder: Stored XSS through comments

The Kubio AI Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.9.2 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. No further endpoint or implementation detail is disclosed beyond the path described here. The official changelog confirms a matching fix in 2.9.3.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Kubio AI Page Builder
Plugin slug
kubio
Affected
<= 2.9.2
Safe version
2.9.3
Published
Oct 02, 2026
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Oct 02, 2026 and is one of 11 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Kubio AI Page Builder to 2.9.3 or a later supported release. Keep SVG-specific HTML allowances scoped to the intended SVG rendering context; do not broaden the allowlist used to sanitize public comments. Official changelog: https://wordpress.org/plugins/kubio/#developers.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Kubio AI Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.9.2 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.

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

References

Primary and upstream sources