Cross-site scripting in extendthemes Kubio AI Page Builder
Priority LOW 31CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00307 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| extendthemes | Kubio AI Page Builder | up to 2.9.2 | — | No fix listed | CNA |
- Kubio AI Page Builder Vendorextendthemes Affected up to 2.9.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-100107
- 2026-10-03 Alias added: GHSA-qhmm-qvx2-27pr
- 2026-10-03 CISA SSVC decision points changed
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/91e44955-d01c-4e81-89bf-35f27b8cda43?source=cve
- https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/filters/svg-kses.php#L74
- https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/filters/svg-kses.php#L80
- https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/admin-pages/pages.php#L195
- https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/lib/frontend.php#L11
- https://plugins.trac.wordpress.org/browser/kubio/tags/2.9.1/build/frontend/index.js
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3720531%40kubio&new=3720531%40kubio
More extendthemes vulnerabilities
- TI-2025-02014 Kubio AI Page Builder <= 2.5.1 - Unauthenticated Local File Inclusion CVSS 3.1CRITICAL 9.8
- TI-2022-04358 Materialis Companion < 1.3.40 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2022-04096 Mesmerize Companion < 1.6.135 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2019-15245 Mesmerize <= 1.6.89 & Materialis <= 1.0.172 - Authenticated Arbitrary Options Update CVSS 3.1HIGH 8.8
- TI-2026-54440 WordPress Lead Generation Contact Widget & AI Chatbot: Chat Button, Phone Call, Telegram… CVSS 3.1HIGH 7.5
- TI-2024-22269 WordPress Teluro theme <= 1.0.31 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2026-100107 · CVE Program
- CVE-2026-100107 · NVD
- FIRST EPSS
- GHSA-qhmm-qvx2-27pr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences