High severity · published Oct 2, 2026
CVE-2026-100107
Kubio AI Page Builder <= 2.9.2 - Unauthenticated Stored Cross-Site Scripting via SVG Comment Content (KSES Allowlist Bypass)
7.2
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KA
Kubio AI Page Builder · extendthemes
through 2.9.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100107
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100107
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/91e44955-d01c-4e81-89bf-35f27b8cda43?source=cve
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/filters/svg-kses.php#L74
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/filters/svg-kses.php#L80
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/admin-pages/pages.php#L195
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/frontend.php#L11
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/build/frontend/index.js
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