Kubio AI Page Builder <= 2.8.5 — Missing Authorization to Authenticated (Contributor+) Front-Page/Menu/Template Configuration Reversion via kubio_restore_front_page AJAX Action
CVE-2026-16779Published · Updated Action summary
Affected: ≤2.8.5Update to 2.8.6 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Kubio AI Page Builder kubio
- Affected≤ 2.8.5
- Patched in2.8.6
Update to 2.8.6 or newer.
You are affected if you run ≤ 2.8.5. Version 2.8.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Kubio AI Page Builder.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.8.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Kubio AI Page Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Wordfence PRISM.
The Kubio AI Page Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.8.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to overwrite front-page configuration options (show_on_front, page_on_front, and page_for_posts), rewrite primary navigation menu items, replace template parts, and overwrite the Kubio global-data post. Although a nonce check via check_ajax_referer() is present, the nonce is unconditionally emitted into window.kubioUtilsData for every user who can load the block editor, making it harvestable by any Contributor and therefore an ineffective authorization barrier.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Kubio AI Page Builder
All 14| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting via kubio/shortcode Block via Product Review ≤2.9.4Update to 2.9.5 | CVE-2026-115816 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.9.3Update to 2.9.4 | CVE-2026-94167 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via SVG Comment Content (KSES Allowlist Bypass) ≤2.9.2Update to 2.9.3 | CVE-2026-100107 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.9.2Update to 2.9.3 | CVE-2026-88782 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.9.2Update to 2.9.3 | CVE-2026-88783 |
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting via kubio/shortcode Block via Product Review
≤2.9.4Update to 2.9.5
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.9.3Update to 2.9.4
- High7.2Unauthenticated Stored Cross-Site Scripting via SVG Comment Content (KSES Allowlist Bypass)
≤2.9.2Update to 2.9.3
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.9.2Update to 2.9.3
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.9.2Update to 2.9.3
Same weakness (Missing Authorization)
All Missing Authorization| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.