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TI-2026-86165 Aliases CVE-2026-115816GHSA-c4vj-h9mj-xv36

Stored cross-site scripting in Kubio AI Page Builder via product review

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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

Kubio AI Page Builder for WordPress from 0 through 2.9.4 contains a stored cross-site scripting flaw. The plugin does not sanitize or escape the review body parameter, which is CWE-79. An authenticated attacker with subscriber-level access or higher can inject arbitrary web scripts into pages that run whenever a user opens an affected page. Exploitation requires the review to be approved, either automatically from a previously approved review by the same account or manually by an administrator, and the active template must use a Kubio-rendered post content block.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

The Kubio AI Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment (review body)' parameter in all versions up to, and including, 2.9.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the attacker's review containing the payload to be approved, either automatically (due to a previously approved review from the same account) or manually by an administrator, and the active single-product template must use a Kubio-rendered wp:post-content block.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th 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

VendorProductAffected versionsFixed inStatusSource
extendthemesKubio AI Page Builderup to 2.9.4—No fix listedCNA
  • Kubio AI Page Builder Vendorextendthemes Affected up to 2.9.4 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Kubio AI Page Builder.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-115816
  2. 2026-11-07 Alias added: GHSA-c4vj-h9mj-xv36
  3. 2026-11-07 CISA SSVC decision points changed
  4. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 5

  • 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
See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences